doc: add estliberitas to collaborators

PR-URL: #6386
Reviewed-By: Johan Bergström <bugs@bergstroem.nu
Reviewed-By: Evan Lucas <evanlucas@me.com>

Author: estliberitas

README.md

@@ -174,6 +174,7 @@ information about the governance of the Node.js project, see
 * [calvinmetcalf](https://github.com/calvinmetcalf) - **Calvin Metcalf** <calvin.metcalf@gmail.com>
 * [claudiorodriguez](https://github.com/claudiorodriguez) - **Claudio Rodriguez** <cjrodr@yahoo.com>
 * [domenic](https://github.com/domenic) - **Domenic Denicola** <d@domenic.me>
+* [estliberitas](https://github.com/estliberitas) - **Alexander Makarenko** <estliberitas@gmail.com>
 * [geek](https://github.com/geek) - **Wyatt Preul** <wpreul@gmail.com>
 * [iarna](https://github.com/iarna) - **Rebecca Turner** <me@re-becca.org>
 * [isaacs](https://github.com/isaacs) - **Isaac Z. Schlueter** <i@izs.me>