doc: update quick start install command

Author: avlllo

docs/guides/help/help.md

@@ -221,6 +221,7 @@ To install Runtime Radar using Helm,
      --set-string 'global.keys.encryption=INIT-DO-NOT-USE' \
      --set-string 'auth-center.administrator.username=admin' \
      --set-string 'auth-center.administrator.password=Password' \
+     --set-string 'reverse-proxy.service.type=NodePort' \
      --set-string 'reverse-proxy.service.nodePorts.http=32000'
    ```
 

docs/quickstart/quickstart.md

@@ -15,6 +15,7 @@ To install Runtime Radar using Helm,
      --set-string 'global.keys.encryption=INIT-DO-NOT-USE' \
      --set-string 'auth-center.administrator.username=admin' \
      --set-string 'auth-center.administrator.password=Password' \
+     --set-string 'reverse-proxy.service.type=NodePort' \
      --set-string 'reverse-proxy.service.nodePorts.http=32000'
    ```