docs: move managed victoria metics guide into right folder (#3750)

* move guide folder
* image width control

docs/managed-victoriametrics/how-to-monitor-k8s.md

@@ -26,7 +26,9 @@ Install the Helm chart in a custom namespace
 ```
 kubectl create namespace monitoring
 ```
+
 2. Create kubernetes-secrets with token to access your dbaas deployment
+
 ```
 kubectl --namespace monitoring create secret generic dbaas-write-access-token --from-literal=bearerToken=your-token
 
@@ -34,8 +36,10 @@ kubectl --namespace monitoring create secret generic dbaas-read-access-token --f
 ```
 
 > You can find your access token on the "Access" tab of your deployment
-> ![access token](./k8s-monitoring-access-token.png)
 
+<p>
+    <img src="k8s-monitoring-access-token.png" width="800">
+</p>
 
 3. Set up a Helm repository using the following commands:
 ```
@@ -111,7 +115,10 @@ kubectl --namespace monitoring port-forward service/vm-grafana 3000:80
    
    Choose VictoriaMetrics or Prometheus as datasource type. Make sure you made this datasource as default for dashboards to work.
 
-![datasource](./k8s-monitoring-datasource.png)
+<p>
+    <img src="k8s-monitoring-datasource.png" width="800">
+</p>
+
 
 > You can find token and URL in your deployment, on access tab