comment site info at PR body like friends.yml format:

```yaml
- nickname: <your nickname>
   avatar: <your avatar>
   url: <your site link>
   description: <description of your site>
```

• nickname: 针草堂
  avatar: https://acuherb.xyz/images/avatar.jpg
  url: https://acuherb.xyz
  description: 针通经络，草养气血。

nickname: Scan’s Blog
avatar: https://fastly.jsdelivr.net/gh/hack-scan/Blog-pic/posts/logo.png
url: https://www.scan.work/
description: Tracing the Freedom of Childhood.