New document (#5299)

* add new doc (#5175)

Co-authored-by: dreamer6680 <146868355@qq.com>

* Test docs (#5235)

* fix: change the page of doc

* chore: add new dependencies, update global styles/layout, optimize docs, add Feishu & GitHub icons, update API examples

* fix: docs/index 404 not found

* Update environment variable names, optimize styles, add new API routes, fix component styles, adjust documentation, and update GitHub and Feishu icons

* update readme

* feat: add a linkfastgpt compontent

* feat: update new doc

* fix:remove unuse page and redirect homepage to docs (#5288)

* fix：remove some unuse doc

* fix: redirect homepage to doc

* git ignore

* fix:navbar to index (#5295)

* sidbar

* fix: navtab unlight (#5298)

* doc

---------

Co-authored-by: dreamer6680 <1468683855@qq.com>
Co-authored-by: dreamer6680 <146868355@qq.com>

document/content/docs/introduction/FAQ/error.mdx

@@ -0,0 +1,11 @@
+---
+title: 报错
+---
+
+1. ### 当前分组上游负载已饱和，请稍后再试(request id:202407100753411462086782835521)
+
+是oneapi渠道的问题，可以换个模型用or换一家中转站
+
+1. ### 使用API时在日志中报错Connection Error 
+
+大概率是api-key填写了openapi，然后部署的服务器在国内，不能访问海外的api，可以使用中转或者反代的手段解决访问不到的问题