Some docs incorrect v1.18 kubectl run command (#20784)

* use "kubectl create deploy" instead of "kubectl run"

* omit whitspace fix

* omit whitspace fix

* avoid shorthand

content/en/docs/concepts/policy/resource-quotas.md

@@ -494,7 +494,8 @@ kubectl create quota test --hard=count/deployments.extensions=2,count/replicaset
 ```
 
 ```shell
-kubectl run nginx --image=nginx --replicas=2 --namespace=myspace
+kubectl create deployment nginx --image=nginx --namespace=myspace
+kubectl scale deployment nginx --replicas=2 --namespace=myspace
 ```
 
 ```shell

content/en/docs/tasks/administer-cluster/namespaces-walkthrough.md

@@ -268,7 +268,8 @@ kubectl get pods
 Production likes to run cattle, so let's create some cattle pods.
 
 ```shell
-kubectl run cattle --image=k8s.gcr.io/serve_hostname --replicas=5
+kubectl create deployment cattle --image=k8s.gcr.io/serve_hostname
+kubectl scale deployment cattle --replicas=5
 
 kubectl get deployment
 ```

content/en/docs/tasks/administer-cluster/namespaces.md

@@ -189,7 +189,8 @@ This delete is asynchronous, so for a time you will see the namespace in the `Te
     To demonstrate this, let's spin up a simple Deployment and Pods in the `development` namespace.
 
     ```shell
-    kubectl run snowflake --image=k8s.gcr.io/serve_hostname --replicas=2 -n=development
+    kubectl create deployment snowflake --image=k8s.gcr.io/serve_hostname  -n=development
+    kubectl scale deployment snowflake --replicas=2 -n=development
     ```
     We have just created a deployment whose replica size is 2 that is running the pod called `snowflake` with a basic container that just serves the hostname.
     Note that `kubectl run` creates deployments only on Kubernetes cluster >= v1.2. If you are running older versions, it creates replication controllers instead.