Fix comment

Author: gmazoyer

backend/tests/functional/proposed_change/test_proposed_change_review.py

@@ -241,8 +241,7 @@ async def test_missing_permission(
         assert account_group
         await account_group.members.delete(db=db)
 
-        # Reject the PC
-
+        # Try to approve the PC
         with pytest.raises(GraphQLError) as exc:
             await unprivileged_client.execute_graphql(
                 query=self.review_query,