fixed reference to zola deploy

Author: doomy

.github/workflows/zola.yml

@@ -11,7 +11,7 @@ jobs:
       - name: "Checkout"
         uses: actions/checkout@main
       - name: "Build and deploy"
-        uses: shalzz/zola-deploy-action@main
+        uses: shalzz/zola-deploy-action@master
         env:
           PAGES_BRANCH: gh-pages
           BUILD_DIR: .