Update the link checker (old hook was deprecated)

Author: eduardo-rodrigues

.github/workflows/README.md

@@ -7,7 +7,7 @@ action file.
 
 The underlying checker is from Tom Cort, 
 [markdown-link-check](https://github.com/tcort/markdown-link-check). This
-is wrapped by Gaurav Nelson's [github-action-markdown-link-check](https://github.com/gaurav-nelson/github-action-markdown-link-check).
+is wrapped in [github-action-markdown-link-check](https://github.com/tcort/github-action-markdown-link-check).
 
 Note this checker checks markdown files directly, thus it will not check any links
 in `html` files on the site. To deal with the fact that Jekyll builds the site

.github/workflows/link_check.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Jekyll Build
         run: bundler exec jekyll build
       - name: Check Links
-        uses: gaurav-nelson/github-action-markdown-link-check@v1
+        uses: tcort/github-action-markdown-link-check@v1
         with:
           config-file: '.github/config/mdcheck.json'
           check-modified-files-only: 'yes'