code block title not working

[kimproweb101]

Hello~
The code below doesn't work in the basic version of vitepress? What should I install to make it look like the image?
I would really appreciate it if you could answer.

not working

```js [package.json]
{  
  "scripts": {
    "docs:build": "vitepress build docs",
    "docs:preview": "vitepress preview docs"
  },  
}
```

My vitepress

official vitepress

[brc-dd]

https://github.com/yuyinws/vitepress-plugin-group-icons

[kimproweb101]

It's working!! Good, good. Thank you very much.