Update mkdocs.yml

Author: PaulZC

.github/workflows/mkdocs.yml

@@ -32,6 +32,6 @@ jobs:
 
       - name: Install Insiders build
         env:
-          GH_TOKEN: ${{ secrets.GH_TOKEN }} 
-        run: pip install git+https://${GH_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git
+          MKDOCS_TOKEN: ${{ secrets.MKDOCS_SECRET }} 
+        run: pip install git+https://${MKDOCS_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git
       - run: mkdocs gh-deploy --force