MediaWiki/languages/messages/MessagesAdy.php

<?php
/** Adyghe (адыгабзэ)
 *
 * To improve a translation please visit https://translatewiki.net
 *
 * @ingroup Language
 * @file
 * @comment falls back to Adyghe (Cyrillic)
 */

$fallback = 'ady-cyrl';