fix(specs): delete user token processing time

Author: kai687

specs/insights/paths/deleteUserToken.yml

@@ -5,6 +5,7 @@ delete:
   summary: Delete user token
   description: |
     Deletes all events related to the specified user token from events metrics and analytics.
+    The deletion is asynchronous, and processed within 48 hours.
     To delete a personalization user profile, see [Delete a user profile](/specs/personalization#tag/profiles/operation/deleteUserProfile).
   parameters:
     - name: userToken