doc: update new CTC members

Ref: https://github.com/nodejs/node/issues/12789
Ref: https://github.com/nodejs/node/issues/12790
PR-URL: https://github.com/nodejs/node/pull/13534


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>