[github] Fix docs custom domain deployment

.github/workflows/docs.yml

@@ -13,8 +13,13 @@ jobs:
       - name: Checkout main
         uses: actions/checkout@v2
 
+      - name: Set custom domain
+        run: |
+          mkdir -p site/
+          echo docs.libretuya.ml > site/CNAME
+
       - name: Deploy docs
-        uses: mhausenblas/mkdocs-deploy-gh-pages@master
+        uses: libretuya/mkdocs-deploy-gh-pages@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CONFIG_FILE: mkdocs.yml