Add --rm for temporary pod command

Without --rm this creates a pod in the default namespace named `curl`. It seems ok to remove it on exit.

Author: alex-dixon

content/en/docs/tutorials/services/connect-applications-service.md

@@ -241,7 +241,7 @@ or [Installing CoreDNS](/docs/tasks/administer-cluster/coredns/#installing-cored
 Let's run another curl application to test this:
 
 ```shell
-kubectl run curl --image=radial/busyboxplus:curl -i --tty
+kubectl run curl --image=radial/busyboxplus:curl -i --tty --rm
 ```
 ```
 Waiting for pod default/curl-131556218-9fnch to be running, status is Pending, pod ready: false