fixed github workflow

.github/workflows/documentation.yaml

@@ -1,7 +1,7 @@
 name: Docs
 on: [push, pull_request]
 permissions:
-    contents: write
+  contents: write
 jobs:
   docs:
     runs-on: ubuntu-latest
@@ -14,12 +14,13 @@ jobs:
           pip install -r requirements.txt
       - name: Sphinx build
         run: |
-          sphinx-build docs docs/_build
+          make docs
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
         with:
           publish_branch: gh-pages
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: docs/_build/
-          force_orphan: true
+          force_orphan: true
+