Update lychee action to catch bad link at the base directory level (#362)

* Change where lychee recurses from

* Add badlink for testing

* Add fail indication to workflow for lychee

* Remove bad link used for testing

Author: willingc

.github/workflows/build-site.yml

@@ -41,7 +41,8 @@ jobs:
         id: lychee
         uses: lycheeverse/lychee-action@v1.9.0
         with:
-          args: --verbose --no-progress _site/**/*.html
+          fail: true
+          args: --verbose --no-progress _site/*.html
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}