doc: add Fishrock123 to the TC

as per https://github.com/iojs/io.js/issues/1502

PR-URL: https://github.com/iojs/io.js/pull/1507


Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>