[e] (0) Fix some stale links to TR/ pages to be stable links to W3C living standards
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=26835
Affected topics: HTML

git-svn-id: https://svn.whatwg.org/webapps@8815 340c8d12-0b0e-0410-8428-c7bf67bfef74