chore: add markdown-link-check as git submodule

ronething · ronething · commit 3b57685c0599 · 2025-07-25T17:53:03.000+08:00
diff --git a/.github/actions/markdown-link-check b/.github/actions/markdown-link-check
@@ -0,0 +1 @@
+Subproject commit 0524e79d8d7d1606112722dd7a3b5f5ce367de3e
