different action to include theme

.github/workflows/docs.yml

@@ -1,16 +1,20 @@
-name: generate docs
+name: Publish docs via GitHub Pages
 on:
   push:
     branches:
       - master
       - develop
+
 jobs:
-  deploy:
+  build:
+    name: Deploy docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: 3.x
-      - run: pip install mkdocs-material
-      - run: mkdocs gh-deploy --force
+      - name: Checkout main
+        uses: actions/checkout@v1
+
+      - name: Deploy docs
+        uses: mhausenblas/mkdocs-deploy-gh-pages@1.16
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CONFIG_FILE: mkdocs.yml