Merge pull request #28995 from jaronnie/patch-1

Update connecting-frontend-backend.md

Author: k8s-ci-robot

content/zh/docs/tasks/access-application-cluster/connecting-frontend-backend.md

@@ -82,7 +82,7 @@ View information about the backend Deployment:
 查看后端的 Deployment 信息：
 
 ```shell
-kubectl describe deployment hello
+kubectl describe deployment backend
 ```
 
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