update contibuting md meta under suyu name

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 <!--
-SPDX-FileCopyrightText: 2018 yuzu Emulator Project
-SPDX-License-Identifier: GPL-2.0-or-later
+SPDX-FileCopyrightText: 2024 suyu emulator project
+SPDX-License-Identifier: MIT
 -->
 
 **The Contributor's Guide has moved to [the suyu wiki](https://gitlab.com/suyu2/suyu/-/wikis/home).**