Update lychee configuration

Author: oruebel

.github/workflows/link-check.yml

@@ -49,4 +49,4 @@ jobs:
         id: lychee
         uses: lycheeverse/lychee-action@v2
         with:
-          args: --verbose --no-progress 'public/**/*.html'
+          args: --verbose --no-progress --exclude "https://neurodatawithoutborders.github.io/" 'public/**/*.html'