update README

README-ja.md

@@ -249,7 +249,7 @@ sync
 
 ## チップ製造元のドキュメント
 
-- CV181x/CV180x MMF SDK開発ドキュメント (中国語): [MultiMedia Framework Software Development Document](https://developer.sophgo.com/thread/471.html)
+- CV181x/CV180x MMF SDK開発ドキュメント (英語と中国語): [MultiMedia Framework Software Development Document](https://developer.sophgo.com/thread/471.html)
 - CVシリーズのTPU SDK開発ドキュメント (中国語): [CV series chip TPU SDK development data summary](https://developer.sophgo.com/thread/473.html)
 
 # Milk-Vについて

README-zh.md

-[English] | 简体中文 | [日本語](./README-ja.md)
+[English](./README.md) | 简体中文 | [日本語](./README-ja.md)
 
 
 # 项目简介
@@ -235,9 +235,9 @@ sync
 
 ## 芯片原厂一些资料的链接
 
-- CV181x/CV180x MMF SDK 开发文档汇总：[CV181x/CV180x MMF SDK 开发文档汇总](https://developer.sophgo.com/thread/471.html)
+- CV181x/CV180x MMF SDK 开发文档汇总 (英文和中文)：[CV181x/CV180x MMF SDK 开发文档汇总](https://developer.sophgo.com/thread/471.html)
 
-- CV系列芯片 TPU SDK 开发资料汇总：[CV系列芯片 TPU SDK 开发资料汇总](https://developer.sophgo.com/thread/473.html)
+- CV系列芯片 TPU SDK 开发资料汇总 (中文)：[CV系列芯片 TPU SDK 开发资料汇总](https://developer.sophgo.com/thread/473.html)
 
 # 关于 Milk-V
 

README.md

@@ -263,7 +263,7 @@ then reboot the board
 
 ## Links to some documentation from the chip manufacturer
 
-- CV181x/CV180x MMF SDK Development Documents (Chinese): [MultiMedia Framework Software Development Document](https://developer.sophgo.com/thread/471.html)
+- CV181x/CV180x MMF SDK Development Documents (English and Chinese): [MultiMedia Framework Software Development Document](https://developer.sophgo.com/thread/471.html)
 - CV Series Chip TPU SDK Development Documentation Compilation (Chinese): [CV series chip TPU SDK development data summary](https://developer.sophgo.com/thread/473.html)
 
 # About Milk-V