kubectl-scale: add page (#11123)

* kubectl scale: add page

* kubectl scale: fix typo

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

---------

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

pages/common/kubectl-scale.md

@@ -0,0 +1,16 @@
+# kubectl edit
+
+> Set a new size for a deployment, replica set, replication controller, or stateful set.
+> More information: <https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#scale>.
+
+- Scale a replica set:
+
+`kubectl scale --replicas={{number_of_replicas}} rs/{{replica_name}}`
+
+- Scale a resource identified by a file:
+
+`kubectl scale --replicas={{number_of_replicas}} -f {{path/to/file.yml}}`
+
+- Scale a deployment based on current number of replicas:
+
+`kubectl scale --current-replicas={{current_replicas}} --replicas={{number_of_replicas}} deployment/{{deployment_name}}`