doc[protocol]: update doc

protocol/README.md

@@ -2,8 +2,7 @@ English | [简体中文](./README_CN.md)
 
 ### Ⅰ. Introduction
 
-- [zfoo protocol](https://github.com/zfoo-project/zfoo/blob/main/protocol/README.md)
-  Ultimate performance binary serialization and deserialization in Java, and has the fewest serialization bytes
+- A decentralized network serialization library for the metaverse, secure, private, and compatible, allowing everyone to have a unique set of protocols
 - The protocol is currently natively supported **C++ Java Javascript C# Go Lua GDScript Python**，It's easy to do cross-platform
 - The protocol can customize the private protocol format to make your protocol more secure, and supports adding fields
   and being compatible with previous and subsequent protocols

protocol/README_CN.md

@@ -2,8 +2,7 @@
 
 ### Ⅰ. 简介
 
-- [zfoo protocol](https://github.com/zfoo-project/zfoo/blob/main/protocol/README.md)
-  是极致性能的Java二进制序列化和反序列化的框架，并且为序列化字节最少的框架
+- 为元宇宙而生的去中心化网络序列化库，安全私有，可前后兼容，让每个人都拥有一套独一无二的协议
 - 协议目前原生支持 **C++ Java Javascript C# Go Lua GDScript Python**，可以轻易实现跨平台
 - 协议可以自定义私有协议格式，让你的协议更加安全，支持增加字段和兼容前后版本协议
 - 兼容protobuf，支持生成protobuf协议文件，提供从pojo到proto的生成方式