fix: update user guide links for better clarity

- Simplify the layout of related links in the user guide
- Combine multiple lines into a more concise format
- Enhance overall readability and accessibility of the documentation

Author: harryisfish

content/docs/user-guide/index.mdx

@@ -38,27 +38,10 @@ MultiPost 的愿景是通过自动化、AI、接口化，让内容创作者可
 - [AI全栈指南 Vol.033：5分钟学会内容一键发布多平台](https://mp.weixin.qq.com/s/K7yh6EsBLOGJzl8Gh8SwLw)
 
 ## 相关链接
-<p className="flex gap-2 flex-row items-center">
-  <span>
-    * [multipost.app](https://multipost.app) - 官方网站 
-  </span>
-  <img src="https://img.shields.io/website?url=https%3A%2F%2Fmultipost.app" alt="MultiPost 网站" />
-  <span>
-    * [md.multipost.app](https://md.multipost.app/) - 文章编辑器 
-  </span>
-  [Repo](https://github.com/leaperone/multipost-wechat-markdown-editor)
-  <img src="https://img.shields.io/website?url=https%3A%2F%2Fmd.multipost.app" alt="MultiPost 文章编辑器" />
-</p>
-
-<p className="flex gap-2 flex-row items-center">
-  <span>
-    * 在 Github 上查看 [MultiPost-Extension](https://github.com/leaperone/MultiPost-Extension) 项目。
-  </span>
-  <img src="https://img.shields.io/github/stars/leaperone/MultiPost-Extension" alt="GitHub Repo stars GitHub星星" />
-  <img src="https://img.shields.io/github/commit-activity/m/leaper-one/MultiPost-Extension" alt="GitHub commit activity GitHub提交活动" />
-</p>
-
-- [MultiPost 文章编辑器](https://md.multipost.app/) - [(代码仓库)](https://github.com/leaper-one/multipost-wechat-markdown-editor) - 用于创建和发布内容到多个平台的在线编辑器
+* [multipost.app](https://multipost.app) - 官方网站 
+* [md.multipost.app](https://md.multipost.app/) - 文章编辑器  [Repo](https://github.com/leaperone/multipost-wechat-markdown-editor)
+* 在 Github 上查看 [MultiPost-Extension](https://github.com/leaperone/MultiPost-Extension) 项目。
+* [MultiPost 文章编辑器](https://md.multipost.app/) - [(代码仓库)](https://github.com/leaper-one/multipost-wechat-markdown-editor) - 用于创建和发布内容到多个平台的在线编辑器
 * [Chrome 扩展](https://chromewebstore.google.com/detail/multipost/dhohkaclnjgcikfoaacfgijgjgceofih) | [Edge 扩展](https://microsoftedge.microsoft.com/addons/detail/multipost/ckoiphiceimehjkolnfffgbmihoppgjg)
 
 ## 文档更新