trim redundant leading spaces (#15904)

content/en/docs/tutorials/stateless-application/expose-external-ip-address.md

@@ -146,12 +146,12 @@ The preceding command creates a
 
 To delete the Service, enter this command:
 
-        kubectl delete services my-service
+    kubectl delete services my-service
 
 To delete the Deployment, the ReplicaSet, and the Pods that are running
 the Hello World application, enter this command:
 
-        kubectl delete deployment hello-world
+    kubectl delete deployment hello-world
 
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