kubectl: add option placeholders (#17608)

Author: Eki9

pages/common/kubectl-get.md

@@ -5,27 +5,31 @@
 
 - Get all namespaces in the current cluster:
 
-`kubectl get namespaces`
+`kubectl get {{[ns|namespaces]}}`
 
 - Get nodes in a specified namespace:
 
-`kubectl get nodes {{[-n|--namespace]}} {{namespace}}`
+`kubectl get {{[no|nodes]}} {{[-n|--namespace]}} {{namespace}}`
 
 - Get pods in a specified namespace:
 
-`kubectl get pods {{[-n|--namespace]}} {{namespace}}`
+`kubectl get {{[po|pods]}} {{[-n|--namespace]}} {{namespace}}`
 
 - Get deployments in a specified namespace:
 
-`kubectl get deployments {{[-n|--namespace]}} {{namespace}}`
+`kubectl get {{[deploy|deployments]}} {{[-n|--namespace]}} {{namespace}}`
 
 - Get services in a specified namespace:
 
-`kubectl get services {{[-n|--namespace]}} {{namespace}}`
+`kubectl get {{[svc|services]}} {{[-n|--namespace]}} {{namespace}}`
 
-- Get all resources in a specified namespace:
+- Get other resources:
 
-`kubectl get all {{[-n|--namespace]}} {{namespace}}`
+`kubectl get {{persistentvolumeclaims|secret}}`
+
+- Get all resources in all namespaces:
+
+`kubectl get all {{[-A|--all-namespaces]}}`
 
 - Get Kubernetes objects defined in a YAML manifest file: