fix: 修改 deploy.yml 的错误逻辑

Author: jayi0908

.github/workflows/deploy.yml

@@ -20,6 +20,9 @@ jobs:
       - name: Install MkDocs and dependencies
         run: pip install -r requirements.txt
 
+      - name: Build MkDocs site
+        run: mkdocs build --site-dir site
+
       - name: Setup Pages
         uses: actions/configure-pages@v5