Update index.md (#7274)

fixed the command to install the prometheus operator

Author: Rajakavitha1

docs/guides/kubernetes/deploy-prometheus-operator-with-grafana-on-lke/index.md

@@ -150,13 +150,12 @@ In this section, you will create a Helm chart values file and use it to deploy P
 1.  Using Helm, deploy a Prometheus Operator release labeled `lke-monitor` in the `monitoring` namespace on your LKE cluster with the settings established in your `values.yaml` file:
 
     ```command
-    helm install \
-    lke-monitor stable/kube-prometheus-stack\
+    helm install lke-monitor kube-prometheus-stack \
+    --repo https://prometheus-community.github.io/helm-charts \
     -f ~/lke-monitor/values.yaml \
     --namespace monitoring \
-    --set grafana.adminPassword=$GRAFANA_ADMINPASSWORD \
-    --set prometheusOperator.createCustomResource=false \
-    --repo https://prometheus-community.github.io/helm-charts
+    --set grafana.adminPassword="$GRAFANA_ADMINPASSWORD" \
+    --set prometheusOperator.createCustomResource=false
     ```
 
     {{< note >}}
@@ -653,4 +652,4 @@ Your monitoring interfaces are now publicly accessible with HTTPS and basic auth
 
 When accessing an interface for the first time, log in as `admin` with the password you configured for [basic auth credentials](#configure-basic-auth-credentials).
 
-When accessing the Grafana interface, you will then log in again as `admin` with the password you exported as `$GRAFANA_ADMINPASSWORD` on your local environment. The Grafana dashboards are accessible at **Dashboards > Manage** from the left navigation bar.
+When accessing the Grafana interface, you will then log in again as `admin` with the password you exported as `$GRAFANA_ADMINPASSWORD` on your local environment. The Grafana dashboards are accessible at **Dashboards > Manage** from the left navigation bar.