Revert "ci(deps): bump becheran/mlc from 0.15.4 to 1.0.0 (#298)" (#302)

This reverts commit 6e39824.

Author: eiriktsarpalis

.github/workflows/markdown-link-check.yml

@@ -13,4 +13,4 @@ jobs:
       - name: Checkout
         uses: actions/checkout@main
       - name: Markup Link Checker (mlc)
-        uses: becheran/mlc@v1.0.0
+        uses: becheran/mlc@v0.15.4