translation comment for "group name" field

// FREEBIE

Signal/src/ViewControllers/NewGroupViewController.m

@@ -240,7 +240,8 @@ static NSString *const kUnwindToMessagesViewSegue = @"UnwindToMessagesViewSegue"
             [self setupGroupImageButton:_thread.groupModel.groupImage];
         }
     }
-    _nameGroupTextField.placeholder = NSLocalizedString(@"NEW_GROUP_NAMEGROUP_REQUEST_DEFAULT", @"");
+    _nameGroupTextField.placeholder
+        = NSLocalizedString(@"NEW_GROUP_NAMEGROUP_REQUEST_DEFAULT", @"Placeholder text for group name field");
     _addPeopleLabel.text            = NSLocalizedString(@"NEW_GROUP_REQUEST_ADDPEOPLE", @"");
 }