docs: add spellcheck command (#6562)

### Describe Your Changes

Implement spellcheck command:
  - add cspell configuration files
  - dockerize spellchecking process
  - add Makefile targets
 
This PR adds a standalone `make spellcheck` target to check `docs/*.md` files for spelling
errors. The target process is dockerized to be run in a separate npm environment.

Some `docs/` typo fixes also included.

### Checklist

The following checks are **mandatory**:

- [x] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).

---------

Signed-off-by: Arkadii Yakovets <ark@victoriametrics.com>
Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: hagen1778 <roman@victoriametrics.com>

.gitignore

@@ -23,4 +23,5 @@ Gemfile.lock
 _site
 *.tmp
 /docs/.jekyll-metadata
-coverage.txt
+coverage.txt
+cspell.json

Makefile

@@ -17,6 +17,7 @@ GO_BUILDINFO = -X '$(PKG_PREFIX)/lib/buildinfo.Version=$(APP_NAME)-$(DATEINFO_TA
 .PHONY: $(MAKECMDGOALS)
 
 include app/*/Makefile
+include cspell/Makefile
 include docs/Makefile
 include deployment/*/Makefile
 include dashboards/Makefile

cspell/Dockerfile

@@ -0,0 +1,12 @@
+FROM node:lts-alpine3.20
+
+ENV PATH="/home/node/node_modules/.bin:$PATH"
+
+WORKDIR /home/node
+
+COPY package.json .
+COPY package-lock.json .
+
+RUN npm ci
+
+WORKDIR /victoriametrics

cspell/Makefile

@@ -0,0 +1,25 @@
+# These commands must be run from the VictoriaMetrics repository root.
+
+# Builds cspell image.
+cspell-install:
+	@ (docker inspect cspell > /dev/null) || (docker build cspell --tag cspell)
+
+# Checks for spelling errors.
+cspell-check: cspell-install
+	@CMD="cspell --no-progress" $(MAKE) cspell-run-command
+
+# Runs spelling error check.
+# A user facing alias to cspell-check command.
+spellcheck: cspell-check
+
+# Runs cspell container commands.
+cspell-run-command:
+	@cp cspell/cspell.json cspell.json
+	@-docker run \
+		--entrypoint /bin/sh \
+		--mount type=bind,src=".",dst=/victoriametrics \
+		--rm \
+		--tty \
+		cspell -c "$(CMD)"
+	@rm cspell.json
+

cspell/README.md

@@ -0,0 +1,11 @@
+# Spell checking
+
+This directory contains configuration and instructions for spell checking in 
+[docs](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/docs) folder.
+
+To run execute the following command:
+```sh
+make cspell-check
+```
+
+This command required Docker to build `cspell` image and run the spell checks. 

cspell/cspell.json

@@ -0,0 +1,67 @@
+{
+  "allowCompoundWords": true,
+  "caseSensitive": false,
+  "language": "en,ru,uk",
+  "minWordLength": 3,
+  "dictionaryDefinitions": [
+    {
+      "addWords": true,
+      "name": "custom-dict",
+      "path": "cspell/custom-dict.txt"
+    }
+  ],
+  "dictionaries": [
+    "aws",
+    "bash",
+    "companies",
+    "cpp",
+    "css",
+    "custom-dict",
+    "data-science",
+    "docker",
+    "dotnet",
+    "en_us",
+    "en-common-misspelling",
+    "fonts",
+    "fullstack",
+    "golang",
+    "html",
+    "k8s",
+    "makefile",
+    "misc",
+    "npm",
+    "people-names",
+    "python",
+    "ru_RU",
+    "rust",
+    "software-terms",
+    "uk_UA",
+    "win32"
+  ],
+  "enabled": true,
+  "files": ["docs/**/*.md"],
+  "ignoreRegExpList": [
+    // Github usernames
+    "/@[a-zA-Z0-9-_]+/i",
+    // Tokens
+    "/Authorization:\\sBearer\\s[a-zA-Z0-9-_=]+\\.[a-zA-Z0-9-_=]+\\.[a-zA-Z0-9-_=]+/",
+    "/(user|password|token):\\s\"?[a-zA-Z0-9-_<>=\\.]+\"?/",
+    // Victoria Metrics related names
+    "/vm[a-zA-Z0-9-_]+/i"
+  ],
+  "import": [
+    "/home/node/node_modules/@cspell/dict-aws/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-companies/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-data-science/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-en_us/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-fullstack/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-golang/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-k8s/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-people-names/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-ru_ru/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-software-terms/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-uk-ua/cspell-ext.json",
+    "/home/node/node_modules/@cspell/dict-win32/cspell-ext.json"
+  ],
+  "useGitignore": true
+}

cspell/custom-dict.txt

@@ -0,0 +1,25 @@
+Aecio
+ampl
+Amz
+apiextensionsv
+appsv
+aps
+Asafs124142
+ays
+betav
+bxc
+crds
+eeks
+Folz
+giv
+jimmidyson
+keyсoncepts
+metav
+MHI
+nn
+otlpmetric
+otlpmetrichttp
+sgn
+xzf
+ошиб
+vcpu

cspell/package.json

@@ -0,0 +1,16 @@
+{
+  "devDependencies": {
+    "@cspell/dict-aws": "^4.0.2",
+    "@cspell/dict-data-science": "^2.0.1",
+    "@cspell/dict-en_us": "^4.3.21",
+    "@cspell/dict-fullstack": "^3.1.8",
+    "@cspell/dict-golang": "^6.0.9",
+    "@cspell/dict-k8s": "^1.0.5",
+    "@cspell/dict-people-names": "^1.0.3",
+    "@cspell/dict-ru_ru": "^2.2.1",
+    "@cspell/dict-software-terms": "^3.4.5",
+    "@cspell/dict-uk-ua": "^4.0.1",
+    "@cspell/dict-win32": "^2.0.3",
+    "cspell": "^8.8.4"
+  }
+}

docs/VictoriaLogs/CHANGELOG.md

@@ -72,7 +72,7 @@ Released at 2024-06-27
 * FEATURE: add `/select/logsql/stream_ids` HTTP endpoint, which can be used for returning [`_stream_id` values](https://docs.victoriametrics.com/victorialogs/keyconcepts/#stream-fields) with the number of hits for the given [LogsQL query](https://docs.victoriametrics.com/victorialogs/logsql/). See [these docs](https://docs.victoriametrics.com/victorialogs/querying/#querying-stream_ids) for details.
 * FEATURE: add `-retention.maxDiskSpaceUsageBytes` command-line flag, which allows limiting disk space usage for [VictoriaLogs data](https://docs.victoriametrics.com/victorialogs/#storage) by automatic dropping the oldest per-day partitions if the storage disk space usage becomes bigger than the `-retention.maxDiskSpaceUsageBytes`. See [these docs](https://docs.victoriametrics.com/victorialogs/#retention-by-disk-space-usage).
 
-* BUGFIX: properly take into account query timeout specified via `-search.maxQueryDuration` command-line flag and/or via `timeout` query arg. Previously these timeouts could be ingored during query execution.
+* BUGFIX: properly take into account query timeout specified via `-search.maxQueryDuration` command-line flag and/or via `timeout` query arg. Previously these timeouts could be ignored during query execution.
 * BUGFIX: [web UI](https://docs.victoriametrics.com/victorialogs/querying/#web-ui): fix the update of the relative time range when `Execute Query` is clicked. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6345).
 
 ## [v0.23.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v0.23.0-victorialogs)
@@ -116,7 +116,7 @@ Released at 2024-06-18
 Released at 2024-06-17
 
 * FEATURE: add ability to accept logs in [Syslog format](https://en.wikipedia.org/wiki/Syslog). See [these docs](https://docs.victoriametrics.com/victorialogs/data-ingestion/syslog/).
-* FEATURE: add abitlity to specify timezone offset when parsing [rfc3164](https://datatracker.ietf.org/doc/html/rfc3164) syslog messages with [`unpack_syslog` pipe](https://docs.victoriametrics.com/victorialogs/logsql/#unpack_syslog-pipe).
+* FEATURE: add ability to specify timezone offset when parsing [rfc3164](https://datatracker.ietf.org/doc/html/rfc3164) syslog messages with [`unpack_syslog` pipe](https://docs.victoriametrics.com/victorialogs/logsql/#unpack_syslog-pipe).
 * FEATURE: add [`top` pipe](https://docs.victoriametrics.com/victorialogs/logsql/#top-pipe) for returning top N sets of the given fields with the maximum number of matching log entries.
 
 ## [v0.19.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v0.19.0-victorialogs)

docs/VictoriaLogs/LogsQL.md

@@ -1783,7 +1783,7 @@ It has the following format:
 ```
 
 Where `exprX` is one of the supported math expressions mentioned below, while `resultNameX` is the name of the field to store the calculated result to.
-The `as` keyword is optional. The result name can be omitted. In this case the result is stored to a field with the name equal to string represenation
+The `as` keyword is optional. The result name can be omitted. In this case the result is stored to a field with the name equal to string representation
 of the corresponding math expression.
 
 `exprX` may reference `resultNameY` calculated before the given `exprX`.
@@ -2328,7 +2328,7 @@ The following query returns up to 5 additional logs in front of every log messag
 _time:5m stacktrace | stream_context before 5
 ```
 
-The following query returns up to 2 logs in frount of the log message with the `error` [word](#word) and up to 5 logs after this log message
+The following query returns up to 2 logs in front of the log message with the `error` [word](#word) and up to 5 logs after this log message
 across all the logs for the last 5 minutes:
 
 ```logsql
@@ -2666,7 +2666,7 @@ See also:
 
 #### Conditional unpack_syslog
 
-If the [`unpack_syslog` pipe](#unpack_syslog-pipe) musn't be applied to every [log entry](https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model),
+If the [`unpack_syslog` pipe](#unpack_syslog-pipe) mustn't be applied to every [log entry](https://docs.victoriametrics.com/victorialogs/keyconcepts/#data-model),
 then add `if (<filters>)` after `unpack_syslog`.
 The `<filters>` can contain arbitrary [filters](#filters). For example, the following query unpacks syslog message fields from `foo` field
 only if `hostname` field in the current log entry isn't set or empty:

docs/goals.md

@@ -47,7 +47,7 @@ menu:
 
 - **Small usability fix is better than non-trivial feature.** Usability fix makes happy existing users.
   Non-trivial feature may make happy some new users, while it may make upset a big share of existing users
-  if the feature breaks some essential functionaly of VictoriaMetrics components or makes it less efficient.
+  if the feature breaks some essential functionality of VictoriaMetrics components or makes it less efficient.
 
 - **Good docs are better than new shiny feature.** Good docs help users discovering new functionality and dealing
   with VictoriaMetrics components in the most efficient way. Nobody uses new shiny feature if it isn't documented properly.

docs/stream-aggregation.md

@@ -133,7 +133,7 @@ outside the current [aggregation interval](#stream-aggregation-config) must be i
 Streaming aggregation results may be incorrect for some time after the restart of [vmagent](https://docs.victoriametrics.com/vmagent/)
 or [single-node VictoriaMetrics](https://docs.victoriametrics.com/) until all the buffered [samples](https://docs.victoriametrics.com/keyconcepts/#raw-samples)
 are sent from remote sources to the `vmagent` or single-node VictoriaMetrics via [supported data ingestion protocols](https://docs.victoriametrics.com/vmagent/#how-to-push-data-to-vmagent).
-In this case it may be a good idea to drop the aggregated data during the first `N` [aggrgation intervals](#stream-aggregation-config)
+In this case it may be a good idea to drop the aggregated data during the first `N` [aggregation intervals](#stream-aggregation-config)
 just after the restart of `vmagent` or single-node VictoriaMetrics. This can be done via the following options:
 
 - The `-streamAggr.ignoreFirstIntervals=N` command-line flag at `vmagent` and single-node VictoriaMetrics. This flag instructs skipping the first `N`