Fix jekyll gh-pages action

The default jekyll gh-pages action "sources" its documentation from the root "/" of the repository; however, the `rspec-puppet` has its documentation root beneath "/docs/".  In other words, the "/docs/" directory contains more advanced jekyll configuration like a "/docs/_config.yml" and a "/docs/_includes/" directory.  This PR fixes the gh-pages deployment.

Signed-off-by: Gavin Didrichsen <gavin.didrichsen@gmail.com>

.github/workflows/jekyll-gh-pages.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Build with Jekyll
         uses: actions/jekyll-build-pages@v1
         with:
-          source: ./
+          source: ./docs/
           destination: ./_site
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3