feat: gender role label correctly

src/Security/Role.php

@@ -290,7 +290,7 @@ final class Role
             self::HOUSE_MANAGER => 'Hausleitung',
             self::GROUPS_ADMIN => 'Preisrechner Admin',
             self::GROUPS_MANAGER => 'Preisrechner',
-            self::CUSTOMER_EXPERT => 'KO-Experte',
+            self::CUSTOMER_EXPERT => 'KO-Expert:in',
             self::EMPLOYEE => 'Mitarbeiter:in',
         ];