Fix some typos

As pointed out here:
http://lists.w3.org/Archives/Public/public-fx/2014OctDec/0020.html

Generated from:

commit d612da51ee0ce11437924c61b5a3eb1ab2875b56
Author: Brian Birtles <birtles@gmail.com>
Date:   Wed Oct 15 16:47:34 2014 +0900

    Fix some typos

    As pointed out here:
    http://lists.w3.org/Archives/Public/public-fx/2014OctDec/0020.html