fix: correct GitHub Actions syntax in deploy-docs workflow

Use actions/deploy-pages@v4 instead of deploy-pages@v4

Author: prosdev

.github/workflows/deploy-docs.yml

@@ -60,5 +60,5 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: deploy-pages@v4
+        uses: actions/deploy-pages@v4