Fix helm create note for k8 label convention changes

Update to note as per changes in Issue #4335 . Otherwise cannot
retrieve the pod with the label names.

pkg/chartutil/create.go

@@ -250,7 +250,7 @@ const defaultNotes = `1. Get the application URL by running these commands:
   export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "<CHARTNAME>.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
   echo http://$SERVICE_IP:{{ .Values.service.port }}
 {{- else if contains "ClusterIP" .Values.service.type }}
-  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ include "<CHARTNAME>.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "<CHARTNAME>.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
   echo "Visit http://127.0.0.1:8080 to use your application"
   kubectl port-forward $POD_NAME 8080:80
 {{- end }}