update latest kubectl run syntax

--dry-run is deprecated

`--restart=Never` flag is unnecessary to create a pod from 1.18

Author: ptux

content/en/docs/reference/kubectl/cheatsheet.md

@@ -290,10 +290,10 @@ kubectl logs -f my-pod                              # stream pod logs (stdout)
 kubectl logs -f my-pod -c my-container              # stream pod container logs (stdout, multi-container case)
 kubectl logs -f -l name=myLabel --all-containers    # stream all pods logs with label name=myLabel (stdout)
 kubectl run -i --tty busybox --image=busybox -- sh  # Run pod as interactive shell
-kubectl run nginx --image=nginx --restart=Never -n 
+kubectl run nginx --image=nginx -n 
 mynamespace                                         # Run pod nginx in a specific namespace
-kubectl run nginx --image=nginx --restart=Never     # Run pod nginx and write its spec into a file called pod.yaml
---dry-run -o yaml > pod.yaml
+kubectl run nginx --image=nginx                     # Run pod nginx and write its spec into a file called pod.yaml
+--dry-run=client -o yaml > pod.yaml
 
 kubectl attach my-pod -i                            # Attach to Running Container
 kubectl port-forward my-pod 5000:6000               # Listen on port 5000 on the local machine and forward to port 6000 on my-pod