Update gh-pages workflow to build HTML from docs

Author: spisakt

.github/workflows/gh-pages.yml

@@ -37,13 +37,12 @@ jobs:
           myst --version
       - name: Build HTML Assets
         run: |
-          myst build --docx
-          myst build --pdf
+          cd docs
           myst build --html
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:
-          path: './_build/html'
+          path: './docs/_build/html'
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4