Update main.yml

Author: showipintbri

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/setup-python@v2
         with:
           python-version: 3.9
-      - run: pip install mkdocs-material
+      - run: pip install mkdocs-material mkdocs-mermaid2-plugin
       - run: mkdocs build --site-dir public
       - name: Git Comands
         run: |