Update the pipeline

Author: braboj

.github/workflows/deploy_pages.yml

@@ -28,6 +28,8 @@ jobs:
       - run: pip install -r requirements.txt
       - run: python ./.scripts/gen_markdown_chapters.py
       - run: cp README.md docs/index.md
+      - run: cp LICENSE docs/license.md
+      - run: cp CONTRIBUTE.md docs/contribute.md
       - run: mkdocs build --site-dir ./_site
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3.0.1