Add cleanup topic

Author: viniciusbds

content/en/docs/tasks/access-application-cluster/connecting-frontend-backend.md

@@ -203,6 +203,17 @@ The output shows the message generated by the backend:
 
 {{% /capture %}}
 
+{{% capture cleanup %}}
+
+To delete the Services, enter this command:
+
+    kubectl delete services frontend hello
+
+To delete the Deployments, the ReplicaSets and the Pods that are running the backend and frontend applications, enter this command:
+
+    kubectl delete deployment frontend hello
+
+{{% /capture %}}
 
 {{% capture whatsnext %}}