Update Maintainers list

Author: ximinez

CONTRIBUTING.md

@@ -350,13 +350,14 @@ existing maintainer without a vote.
 
 ## Current Maintainers
 
-Maintainers are users with admin access to the repo. Maintainers do not typically approve or deny pull requests.
+Maintainers are users with admin access to the repo.
 
 * [intelliot](https://github.com/intelliot) (Ripple)
-* [JoelKatz](https://github.com/JoelKatz) (Ripple)
-* [nixer89](https://github.com/nixer89) (XRP Ledger Foundation)
+* [N3TC4T](https://github.com/N3TC4T) (XRP Ledger Foundation)
+* [RichardAH](https://github.com/RichardAH) (XRP Ledger Foundation)
 * [Silkjaer](https://github.com/Silkjaer) (XRP Ledger Foundation)
 * [WietseWind](https://github.com/WietseWind) (XRPL Labs + XRP Ledger Foundation)
+* [ximinez](https://github.com/ximinez) (Ripple)
 
 ## Current Code Reviewers