[e] (0) Fix the markup to be consistent in the TextTrackKind idl block
Affected topics: Video Text Tracks

git-svn-id: http://svn.whatwg.org/webapps@7969 340c8d12-0b0e-0410-8428-c7bf67bfef74

Author:    ianh <ianh@340c8d12-0b0e-0410-8428-c7bf67bfef74>