fix NOTE.txt (#4515)

Author: jlandowner

ci/helm-chart/templates/NOTES.txt

@@ -15,9 +15,8 @@
   export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "code-server.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
   echo http://$SERVICE_IP:{{ .Values.service.port }}
 {{- else if contains "ClusterIP" .Values.service.type }}
-  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "code-server.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
+  kubectl port-forward --namespace {{ .Release.Namespace }} service/{{ include "code-server.fullname" . }} 8080:http
 {{- end }}
 
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