Update TRANSLATORS (#4349)

Author: Arvil

options/locale/TRANSLATORS

@@ -27,6 +27,7 @@ Enrico Testori hypertesto AT gmail DOT com
 Ezequiel Gonzalez Rial <gonrial AT gmail DOT com>
 Gabriel Dugny <gabriel DOT dugny AT gmail DOT com>
 Gregor Santner <gdev AT live DOT de>
+Guilhem Marion <gmarion AT netc DOT fr>
 Halil Kaya <halil AT halilkaya DOT net>
 Hamid Feizabadi <hamidfzm AT gmail DOT com>
 Hilton Wichwski Silva <hilton AT hiltonws DOT com DOT br>