[3] Editorial: clean up wording around form validation API · whatwg/html@26665c1 ( 版) <https://github.com/whatwg/html/commit/26665c1a854eed59487fb7b2a24bdc011a6701f0>
[4] Remove <keygen> (domenic著, ) <https://github.com/whatwg/html/commit/5baa38720f6e83c94a50018c4565808ad548d69c>