diff --git a/docs/docs/deployment.zh-CN.md b/docs/docs/deployment.zh-CN.md
index 9d8e5466460a..c3a8acf4d767 100644
--- a/docs/docs/deployment.zh-CN.md
+++ b/docs/docs/deployment.zh-CN.md
@@ -64,7 +64,7 @@ export default {
 
 对于需要在 html 里管理 publicPath 的场景，比如在 html 里判断环境做不同的输出，可通过配置 [runtimePublicPath](/zh-CN/config/#runtimepublicpath) 为解决。 
 
-```bash
+```js
 export default {
   runtimePublicPath: true,
 };