Update publish_docs.yml

.github/workflows/publish_docs.yml

@@ -2,18 +2,15 @@ name: Publish docs via GitHub Pages to https://kjellkod.github.io/g3log/
 on:
   push:
     branches:
-      - master
-
+      - master 
+      - main
 jobs:
-  build:
-    name: Deploy docs
+  deploy:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout master
-        uses: actions/checkout@v2
-
-      - name: Deploy docs
-        uses: mhausenblas/mkdocs-deploy-gh-pages@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-#          CONFIG_FILE: docs/mkdocs.yml -- this didn't seem to work
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.x
+      - run: pip install mkdocs-material 
+      - run: mkdocs gh-deploy --force