[e] (0) Rearrange text from r8338 to be less ambiguous.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23366
Affected topics: CSS, DOM APIs

git-svn-id: http://svn.whatwg.org/webapps@8340 340c8d12-0b0e-0410-8428-c7bf67bfef74