Tune 404 checker to exclude false-positives and use intended file path (#16636)

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

@@ -15,7 +15,7 @@ jobs:
         id: lychee
         uses: lycheeverse/lychee-action@v1.6.1
         with:
-          args: ./docs --base https://developer.hashicorp.com/ --exclude-all-private --exclude .png --exclude .svg --max-concurrency=24 --no-progress --verbose
+          args: ./website/content/docs/ --base https://developer.hashicorp.com/ --exclude-all-private --exclude '\.(svg|gif|jpg|png)' --exclude 'manage\.auth0\.com' --max-concurrency=24 --no-progress --verbose
           # Fail GitHub action when broken links are found?
           fail: false
         env: