Fix discord link

Author: MoshiQAQ

README.md

@@ -2,7 +2,7 @@ English | [中文](README_zh.md)
 
 [![GitHub stars](https://img.shields.io/github/stars/mannaandpoem/OpenManus?style=social)](https://github.com/mannaandpoem/OpenManus)  
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)  
-[![Discord Follow](https://dcbadge.vercel.app/api/server/https://discord.gg/6dn7Sa3a?style=flat)](https://discord.gg/6dn7Sa3a)
+[![Discord](https://img.shields.io/badge/Discord-Join%20Server-5865F2?style=flat&logo=discord&logoColor=white)](https://discord.gg/6dn7Sa3a)
 # 👋 OpenManus
 
 Manus is incredible, but OpenManus can achieve any idea without an *Invite Code* 🛫!

README_zh.md

@@ -2,7 +2,7 @@
 
 [![GitHub stars](https://img.shields.io/github/stars/mannaandpoem/OpenManus?style=social)](https://github.com/mannaandpoem/OpenManus)  
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)  
-[![Discord Follow](https://dcbadge.vercel.app/api/server/https://discord.gg/6dn7Sa3a?style=flat)](https://discord.gg/6dn7Sa3a)
+[![Discord](https://img.shields.io/badge/Discord-Join%20Server-5865F2?style=flat&logo=discord&logoColor=white)](https://discord.gg/6dn7Sa3a)
 # 👋 OpenManus
 
 Manus 非常棒，但 OpenManus 无需邀请码即可实现任何创意 🛫！