[webkitpy] Add missing contributor email addresses
https://bugs.webkit.org/show_bug.cgi?id=115394

Reviewed by Ryosuke Niwa.

* Scripts/webkitpy/common/config/contributors.json:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149350 268f45cc-cd09-0410-ab3c-d52691b4dbfc