📝 Remove unused characters

Signed-off-by: Johannlai <[email protected]>

Author: JohannLai

docs/advanced-usage_CN.md

@@ -21,8 +21,6 @@
    `;
    ```
 
-````
-
 ## JavaScript 注入
 
 添加自定义功能，如键盘快捷键。