Broken references in HTML Accessibility API Mappings 1.0

[dontcallmedom-bot]

While crawling HTML Accessibility API Mappings 1.0, the following links to other specifications were detected as pointing to non-existing anchors, which should be fixed:

• https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-param-name
• https://html.spec.whatwg.org/multipage/microdata.html#attr-itemprop
• https://html.spec.whatwg.org/multipage/sections.html#sectioning-root

_{This issue was detected and reported semi-automatically by Strudy based on data collected in webref.}