[doc] fix broken link

README.md

@@ -80,7 +80,7 @@ Note: The maturity level of the language status is determined based on the types
 - [Installation, Configuration, and Running](./doc/3_install_and_run.en.md)
 - [GödelScript Query Language](./doc/4_godelscript_language.en.md)
 - [Developing Plugins (VSCode)](./doc/5_toolchain.en.md)
-- [COREF API](https://codefuse-ai.github.io/CodeFuse-Query/godel-api/coref_library_reference.html)
+- [COREF API](https://codefuse-ai.github.io/CodeFuse-Query)
 
 ## Tutorial
 - [Online Tutorial](./tutorial/README.en.md)

README_cn.md

@@ -79,7 +79,7 @@ CodeFuse-Query 包括**Sparrow CLI **和CodeFuse-Query**在线服务Query中心*
 - [安装、配置、运行](./doc/3_install_and_run.md)
 - [Gödel查询语言介绍](./doc/4_godelscript_language.md)
 - [VSCode开发插件](./doc/5_toolchain.md)
-- [COREF API](https://codefuse-ai.github.io/CodeFuse-Query/godel-api/coref_library_reference.html)
+- [COREF API](https://codefuse-ai.github.io/CodeFuse-Query)
 
 ## 教程 (tutorial)
 - [在线教程](./tutorial/README.md)

doc/index.md

@@ -3,6 +3,16 @@ title: Home
 layout: default
 nav_order: 1
 ---
-## 文档 (Documentation)
+# 文档 (Documentation)
 
-请见[仓库首页](https://github.com/codefuse-ai/CodeFuse-Query)
+* 请见[仓库首页](https://github.com/codefuse-ai/CodeFuse-Query)
+
+# COREF Library Reference
+
+* [coref::cfamily](./godel-api/cfamily/reference.html)
+* [coref::go](./godel-api/go/reference.html)
+* [coref::java](./godel-api/java/reference.html)
+* [coref::javascript](./godel-api/javascript/reference.html)
+* [coref::properties](./godel-api/properties/reference.html)
+* [coref::python](./godel-api/python/reference.html)
+* [coref::xml](./godel-api/xml/reference.html)