Fixed syntax error.

Author: Till Brehm

interface/web/admin/lib/lang/en_server_config.lng

@@ -287,7 +287,7 @@ $wb['xmpp_port_pastebin_txt'] = 'Pastebin';
 $wb['xmpp_port_bosh_txt'] = 'BOSH';
 $wb["disable_bind_log_txt"] = "Disable bind9 messages for Loglevel WARN";
 $wb["apps_vhost_enabled_txt"] = "Apps-vhost enabled";
-$wb["mailinglist_manager_txt"] = 'Mailinglist Manager'
+$wb["mailinglist_manager_txt"] = 'Mailinglist Manager';
 $wb['skip_le_check_txt'] = 'Skip Lets Encrypt Check';
 $wb['migration_mode_txt'] = 'Server Migration Mode';
 ?>