Update README files to include a new Documentation section with links to Quick Start, API Reference, and Changelog.

Author: lijy91

README-ZH.md

@@ -21,6 +21,7 @@
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
 - [平台支持](#%E5%B9%B3%E5%8F%B0%E6%94%AF%E6%8C%81)
+- [文档](#%E6%96%87%E6%A1%A3)
 - [快速开始](#%E5%BF%AB%E9%80%9F%E5%BC%80%E5%A7%8B)
   - [安装](#%E5%AE%89%E8%A3%85)
   - [用法](#%E7%94%A8%E6%B3%95)
@@ -38,6 +39,12 @@
 | :---: | :---: | :-----: |
 |  ✔️   |  ✔️   |   ✔️    |
 
+## 文档
+
+- [快速开始](https://leanflutter.dev/zh/documentation/screen_retriever/quick-start)
+- [API 参考](https://pub.dev/documentation/screen_retriever/latest/screen_retriever/)
+- [更新日志](https://pub.dev/packages/screen_retriever/changelog)
+
 ## 快速开始
 
 ### 安装

README.md

@@ -23,6 +23,7 @@ English | [简体中文](./README-ZH.md)
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
 - [Platform Support](#platform-support)
+- [Documentation](#documentation)
 - [Quick Start](#quick-start)
   - [Installation](#installation)
   - [Usage](#usage)
@@ -40,6 +41,12 @@ English | [简体中文](./README-ZH.md)
 | :---: | :---: | :-----: |
 |  ✔️   |  ✔️   |   ✔️    |
 
+## Documentation
+
+- [Quick Start](https://leanflutter.dev/documentation/screen_retriever/quick-start)
+- [API Reference](https://pub.dev/documentation/screen_retriever/latest/screen_retriever/)
+- [Changelog](https://pub.dev/packages/screen_retriever/changelog)
+
 ## Quick Start
 
 ### Installation