Merge pull request #120118 from Ithrael/doc/kubectl-restart-without-specific-deployment-will-restart-all-deployments

doc(kubectl): Kubectl restart command without specific deployment wil…

staging/src/k8s.io/kubectl/pkg/cmd/rollout/rollout_restart.go

@@ -63,6 +63,9 @@ var (
 	        Resource rollout will be restarted.`))
 
 	restartExample = templates.Examples(`
+		# Restart all deployments in test-namespace namespace
+		kubectl rollout restart deployment -n test-namespace
+
 		# Restart a deployment
 		kubectl rollout restart deployment/nginx