deploy_mkdocs.yml, take 3

.github/workflows/deploy_mkdocs.yml

@@ -10,14 +10,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout master
-        uses: actions/checkout@v2
+        uses: actions/checkout@v1
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master
-        # Or use mhausenblas/mkdocs-deploy-gh-pages@nomaterial to build without the mkdocs-material theme
         env:
           GITHUB_TOKEN: ${{ secrets.MKDOCS_ACTION_TOKEN }}
-          #CUSTOM_DOMAIN: optionaldomain.com
-          #CONFIG_FILE: folder/mkdocs.yml
-          EXTRA_PACKAGES: build-base mkdocs-redirects markdown-fenced-code-tabs
-          # GITHUB_DOMAIN: github.myenterprise.com