Update documentation on delete behavior of groups

Author: NammNguyen

content/en/docs/developerportal/app-insights/feedback.md

@@ -133,7 +133,7 @@ On the **Groups** tab, you can open group details by clicking the group in the l
 The following options are available: 
 
 * **Ungroup** – Ungroup all feedback in the group. This action does not delete the group.
-* **Delete Group** – Delete the group and all feedback within it. This action is destructive and, once you delete a group with feedback, the feedback is also deleted.
+* **Delete Group** – Delete the group, but not the feedback within it. This action is destructive and, once you delete a group all metadata belonging to the group is also deleted.
 * **Group Name** – The name of the group, which you can edit by clicking it.
     * **Description** – The description of the group.
 * **Tags** – Any tags assigned to the group.