doc: add @addaleax to the CTC

Voted on and approved at CTC meeting
https://github.com/nodejs/node/issues/7948
(2016-08-03).

PR-URL: https://github.com/nodejs/node/pull/7966


Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>