Apply suggestions from code review

Co-authored-by: daxpedda <[email protected]>

Author: Philipp-M

crates/web-sys/webidls/enabled/MathMLElement.webidl

@@ -1,14 +1,4 @@
-/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * The origin of this IDL file is
- * https://mathml-refresh.github.io/mathml-core/
- *
- * Copyright © 2019 W3C® (MIT, ERCIM, Keio, Beihang). W3C liability, trademark
- * and permissive document license rules apply.
- */
+// https://www.w3.org/TR/mathml-core
 
 [Exposed=Window]
 interface MathMLElement : Element { };
@@ -17,6 +7,8 @@ MathMLElement includes GlobalEventHandlers;
 MathMLElement includes HTMLOrSVGElement;
 // https://drafts.csswg.org/cssom/#the-elementcssinlinestyle-mixin
 MathMLElement includes ElementCSSInlineStyle;
+// TODO: Deprecated, add to `GlobalEventHandlers` via mixin:
 // https://w3c.github.io/touch-events/#extensions-to-the-globaleventhandlers-mixin
 MathMLElement includes TouchEventHandlers;
+// TODO: See `OnErrorEventHandlerForNodes` definition in `EventHandler.webidl`.
 MathMLElement includes OnErrorEventHandlerForNodes;