fix broken links

docs/en/README.md

@@ -88,9 +88,7 @@ ambitions can join together to provide more features to the community.
 
 You can make contribution by the following ways:
 1. [Make Pull Requests to our code](https://github.com/DGP-Studio/Snap.Hutao/pulls)
-2. Improve localization by translating the project on Crowdin
-    1. [Snap Hutao](https://translate.hut.ao/)
-    2. [Snap Hutao Document](https://translate-docs.hut.ao/)
+2. Translate the project for a better [localization](i18n.md)
 3. [Update document](https://github.com/DGP-Studio/Snap.Hutao.Docs)
 
 <!-- @include: star-request.md -->

docs/en/project.md

@@ -34,7 +34,7 @@ Documents will be provided on this website for all migrated features. The migrat
 
 The following features are planned to add when the project was established.
 - [ ] Wish history cloud sync
-- [ ] 国际化支持
+- [ ] [Localization](i18n.md)
 - [x] International server support
   - [x] Game Launcher
   - [x] Server Switch

docs/zh/README.md

@@ -87,9 +87,7 @@ Snap Hutao 是一个由开源社区维护的免费项目，我们希望有更多
 
 你可以通过以下方法为项目作出贡献：
 1. [向我们提交 PR](https://github.com/DGP-Studio/Snap.Hutao/pulls)
-2. 在 Crowdin 上进行本地化翻译
-   1. [主项目](https://translate.hut.ao/)
-   2. [文档](https://translate-docs.hut.ao/)
+2. 为项目贡献[本地化翻译](i18n.md)
 3. [为我们更新文档](https://github.com/DGP-Studio/Snap.Hutao.Docs)
 
 <!-- @include: star-request.md -->

docs/zh/project.md

@@ -36,7 +36,7 @@ redirectFrom: /project.html
 以下新功能计划被增加到胡桃工具箱中
 - [ ] 祈愿云端同步
   - [x] 胡桃帐号系统
-- [x] [国际化支持](/i18n.html)
+- [x] [国际化支持](i18n.md)
 - [x] 国际服支持
   - [x] 游戏启动器
   - [x] 服务器切换