locale: Add myself to TRANSLATORS (gogs#5177)

Author: changwoo

conf/locale/TRANSLATORS

@@ -21,6 +21,7 @@ Barış Arda Yılmaz <ardayilmazgamer AT gmail DOT com>
 Bo-Yi Wu <appleboy DOT tw AT gmail DOT com>
 Breton Corentin <contact AT neodarz DOT net>
 Camille Baronnet <gogs AT camillebaronnet DOT fr>
+Changwoo Ryu <cwryu AT debian DOT org>
 Christoph Kisfeld <christoph DOT kisfeld AT gmail DOT com>
 Cysioland
 Damaris Padieu <damizx AT hotmail DOT fr>