add zhihu blog

Author: BUAADreamer

README.md

@@ -3,7 +3,7 @@
 [![license](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000)](https://github.com/BUAADreamer/EasyRAG/blob/main/licence)
 [![arxiv badge](https://img.shields.io/badge/arxiv-2410.10315-red)](https://arxiv.org/abs/2410.10315)
 [![GitHub Repo stars](https://img.shields.io/github/stars/BUAADreamer/EasyRAG?style=social)](https://github.com/BUAADreamer/EasyRAG/stargazers)
-
+[![zhihu blog](https://img.shields.io/badge/zhihu-Blog-informational)](https://zhuanlan.zhihu.com/p/7272025344)
 ## Table of Contents
 
 - [Overview](#Overview)