Improve notes to access deployed services (#7017)

stable/mongodb/Chart.yaml

@@ -1,5 +1,5 @@
 name: mongodb
-version: 4.0.4
+version: 4.0.5
 appVersion: 3.6.6
 description: NoSQL document-oriented database that stores JSON-like documents with dynamic schemas, simplifying the integration of data in content-driven applications.
 keywords:

stable/mongodb/templates/NOTES.txt

@@ -60,8 +60,7 @@ To connect to your database from outside the cluster execute the following comma
 
 {{- else if contains "ClusterIP" .Values.service.type }}
 
-    export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "mongodb.name" . }}" -o jsonpath="{.items[0].metadata.name}")
-    kubectl port-forward --namespace {{ .Release.Namespace }} $POD_NAME 27017:27017 &
+    kubectl port-forward --namespace {{ .Release.Namespace }} svc/{{ template "mongodb.fullname" . }} 27017:27017 &
     mongo --host 127.0.0.1 {{- if .Values.usePassword }} -p $MONGODB_ROOT_PASSWORD{{- end }}
 
 {{- end }}