All links to WAI-ARIA specs broken in README and Wiki

[Splaktar]

README.md points to http://www.w3.org/TR/wai-aria/roles#textalternativecomputation which gives 404 Not Found: DOCUMENT NOT FOUND.

The Audit Rules Wiki which is linked to from failing tests includes broken WAI-ARIA spec links as well. All links on the page to the spec are broken.

• http://www.w3.org/TR/wai-aria/roles#roles_categorization
• http://www.w3.org/TR/wai-aria/states_and_properties#aria-labelledby
• http://www.w3.org/TR/wai-aria/roles#requiredState
• http://www.w3.org/TR/wai-aria/states_and_properties#propcharacteristic_value
• http://www.w3.org/TR/wai-aria/states_and_properties#aria-owns
• plus about 6-10 more...

The only working links seem to go to the HTML5 spec and the WCAG.

I'm not sure exactly which version of the WAI-ARIA spec they should point to, or I could try to fix them.

[Splaktar]

It looks like these links should maybe be pointing at the following base URL now: https://www.w3.org/TR/wai-aria-1.0/

Something like https://www.w3.org/TR/wai-aria-1.0/roles#textalternativecomputation works. Something like https://www.w3.org/TR/wai-aria-1.1/roles#textalternativecomputation doesn't work and based on #277 not getting any activity, I'm going to assume that these tools don't support WAI-ARIA 1.1 at all.

I'll try to update the URLs using the 1.0 spec URL.

[Splaktar]

OK, Wiki is fixed in https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules/bbf5ee54f936e4ed689c60b4ab90cfdce34e7bed.

[Splaktar]

README fix is in PR #370.