Revert "docs: removed code-style highlighting for commanad-line flags of VM components (#6147)"

This reverts commit 9bedbcfa2f.

docs/README.md

@@ -2679,7 +2679,7 @@ Files included in each folder:
 
 Pass `-help` to VictoriaMetrics in order to see the list of supported command-line flags with their description:
 
-```
+```sh
   -bigMergeConcurrency int
      Deprecated: this flag does nothing
   -blockcache.missesBeforeCaching int

docs/Single-server-VictoriaMetrics.md

@@ -2687,7 +2687,7 @@ Files included in each folder:
 
 Pass `-help` to VictoriaMetrics in order to see the list of supported command-line flags with their description:
 
-```
+```sh
   -bigMergeConcurrency int
      Deprecated: this flag does nothing
   -blockcache.missesBeforeCaching int

docs/vmagent.md

@@ -1623,7 +1623,7 @@ It is safe sharing the collected profiles from security point of view, since the
 
 `vmagent` can be fine-tuned with various command-line flags. Run `./vmagent -help` in order to see the full list of these flags with their descriptions and default values:
 
-```
+```sh
 ./vmagent -help
 
 vmagent collects metrics data via popular data ingestion protocols and routes them to VictoriaMetrics.

docs/vmalert.md

@@ -965,7 +965,7 @@ command-line flags with their descriptions.
 
 The shortlist of configuration flags is the following:
 
-```
+```sh
   -clusterMode
      If clusterMode is enabled, then vmalert automatically adds the tenant specified in config groups to -datasource.url, -remoteWrite.url and -remoteRead.url. See https://docs.victoriametrics.com/vmalert/#multitenancy . This flag is available only in Enterprise binaries. See https://docs.victoriametrics.com/enterprise/
   -configCheckInterval duration

docs/vmauth.md

@@ -1121,7 +1121,7 @@ It is safe sharing the collected profiles from security point of view, since the
 
 Pass `-help` command-line arg to `vmauth` in order to see all the configuration options:
 
-```
+```sh
 ./vmauth -help
 
 vmauth authenticates and authorizes incoming requests and proxies them to VictoriaMetrics.

docs/vmbackup.md

@@ -304,7 +304,7 @@ Refer to the respective documentation for your object storage provider for more
 
 Run `vmbackup -help` in order to see all the available options:
 
-```
+```sh
   -concurrency int
      The number of concurrent workers. Higher concurrency may reduce backup duration (default 10)
   -configFilePath string

docs/vmbackupmanager.md

@@ -415,7 +415,7 @@ command-line flags with their descriptions.
 
 The shortlist of configuration flags is the following:
 
-```
+```text
 vmbackupmanager performs regular backups according to the provided configs.
 
 subcommands:

docs/vmgateway.md

@@ -273,7 +273,7 @@ Example usage for tokens issued by Google:
 
 Below is the list of configuration flags (it can be viewed by running `./vmgateway -help`):
 
-```
+```sh
   -auth.httpHeader string
      HTTP header name to look for JWT authorization token (default "Authorization")
   -auth.jwksEndpoints array

docs/vmrestore.md

@@ -91,7 +91,7 @@ i.e. the end result would be similar to [rsync --delete](https://askubuntu.com/q
 
 * Run `vmrestore -help` in order to see all the available options:
 
-```
+```sh
   -concurrency int
      The number of concurrent workers. Higher concurrency may reduce restore duration (default 10)
   -configFilePath string