Clean zh/docs directory for dangling YAML files (#17341)

There are many YAML manifests sneaking into the `zh/docs/` directory.
These files should go to the `zh/examples` directory instead. Having
these "garbage" files (not referenced anywhere) is creating confusion
for the release meister when merging branches. For example, some YAML
files found in the 'master' branch are no longer there in the
release-1.16 branch. It is tedious, if possible at all, to solve all
this kind of conflicts during a rebase.

The PR cleanses the zh/docs directory for all dangling YAML files.

content/zh/docs/concepts/workloads/controllers/deployment.md

@@ -38,13 +38,12 @@ The following are typical use cases for Deployments:
 
 Here is an example Deployment. It creates a ReplicaSet to bring up three nginx Pods.
 
-{{< code file="nginx-deployment.yaml" >}}
+{{< codenew file="controllers/nginx-deployment.yaml" >}}
 
 Run the example by downloading the example file and then running this command:
 
 ```shell
-$ kubectl create -f docs/user-guide/nginx-deployment.yaml --record
-deployment "nginx-deployment" created
+kubectl apply -f https://k8s.io/examples/controllers/nginx-deployment.yaml
 ```
 
 Setting the kubectl flag `--record` to `true` allows you to record current command in the annotations of
@@ -361,7 +360,7 @@ First, check the revisions of this deployment:
 $ kubectl rollout history deployment/nginx-deployment
 deployments "nginx-deployment"
 REVISION    CHANGE-CAUSE
-1           kubectl create -f docs/user-guide/nginx-deployment.yaml --record
+1           kubectl apply -f https://k8s.io/examples/controllers/nginx-deployment.yaml
 2           kubectl set image deployment/nginx-deployment nginx=nginx:1.9.1
 3           kubectl set image deployment/nginx-deployment nginx=nginx:1.91
 ```