✏️ Chore: update theme preview link

README.md

@@ -102,6 +102,7 @@ the FixIt theme may be more suitable for you.
 To see this theme in action, here are some live demo sites which are rendered with **FixIt** theme.
 
 * [FixIt Theme Official Website](https://fixit.lruihao.cn)
+* [FixIt Theme Official Website - Preview](https://pre.fixit.lruihao.cn)
 * [Lruihao's note](https://lruihao.cn)
 * Add a your site by [making a PR](https://github.com/Lruihao/FixIt/pulls) (e.g. [#111](https://github.com/Lruihao/FixIt/pull/111))
 

README.zh-cn.md

@@ -101,6 +101,7 @@ sh fixit_checker.sh
 为了直观地浏览主题特性，这里有一些基于 **FixIt** 主题渲染的预览网站。
 
 * [FixIt 主题官网](https://fixit.lruihao.cn/zh-cn/)
+* [FixIt 主题官网 - 预览](https://pre.fixit.lruihao.cn/zh-cn/)
 * [李瑞豪的博客](https://lruihao.cn)
 * 你可以通过 [提交 PR](https://github.com/Lruihao/FixIt/pulls) 添加你的网站（例如：[#111](https://github.com/Lruihao/FixIt/pull/111)）
 

exampleSite/content/posts/theme-documentation-basics/index.en.md

@@ -1092,7 +1092,7 @@ This helps to distinguish the different contents of preview environment and prod
 
 For example:
 
--  [preview environment with draft menu items](https://fixit-obuxwqlr6-lruihao.vercel.app)
+-  [preview environment with draft menu items](https://pre.fixit.lruihao.cn)
 -  [production environment without draft menu items](https://fixit.lruihao.cn)
 {{< /admonition >}}
 

exampleSite/content/posts/theme-documentation-basics/index.zh-cn.md

@@ -1103,7 +1103,7 @@ Hugo 有一个简单而强大的 [菜单系统](https://gohugo.io/content-manage
 
 例如：
 
--  [有草稿菜单的预览环境](https://fixit-obuxwqlr6-lruihao.vercel.app)
+-  [有草稿菜单的预览环境](https://pre.fixit.lruihao.cn)
 -  [没有草稿菜单的生产环境](https://fixit.lruihao.cn)
 {{< /admonition >}}