Update documentation for helm deployment

documentation/docs/install-pmm/install-pmm-server/deployment-options/helm/index.md

@@ -147,24 +147,24 @@ Create the required Kubernetes secret and deploy PMM Server using Helm:
 
         ```bash
         # If using ClusterIP (default)
-        kubectl port-forward svc/pmm-service 443:443
+        kubectl port-forward svc/monitoring-service 443:443
 
         # If using NodePort
-        kubectl get svc pmm-service -o jsonpath='{.spec.ports[0].nodePort}'
+        kubectl get svc monitoring-service -o jsonpath='{.spec.ports[0].nodePort}'
         ```
 
     === "On OpenShift"
         OpenShift offers native routing capabilities through its Route resource, which provides external access with built-in load balancing and SSL termination:
 
         ```bash
         # Create a Route to expose PMM
-        oc expose svc/pmm-service --port=443
+        oc expose svc/monitoring-service --port=443
 
         # Get the Route URL
-        oc get route pmm-service -o jsonpath='{.spec.host}'
+        oc get route monitoring-service -o jsonpath='{.spec.host}'
 
         # Or use port-forwarding for testing
-        oc port-forward svc/pmm-service 443:443
+        oc port-forward svc/monitoring-service 443:443
         ```
 
 ### Configure PMM Server