added line separation in kubectl page (#30359)

* added line separation in kubectl page

added line separation in kubectl page - 2

added line separation in kubectl page - 3 added space at ends

final changes

added spaces at end

* removed Line-549 from end of the file

* added Line-548 at the end of file

Author: robotjellyzone

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

@@ -91,6 +91,7 @@ If:
 * the `KUBERNETES_SERVICE_HOST` environment variable is set, and
 * the `KUBERNETES_SERVICE_PORT` environment variable is set, and
 * you don't explicitly specify a namespace on the kubectl command line
+
 then kubectl assumes it is running in your cluster. The kubectl tool looks up the
 namespace of that ServiceAccount (this is the same as the namespace of the Pod)
 and acts against that namespace. This is different from what happens outside of a
@@ -545,4 +546,3 @@ Current user: plugins-user
 
 * To find out more about plugins, take a look at the [example cli plugin](https://github.com/kubernetes/sample-cli-plugin).
 
-