docs: update discord link.

README.md

@@ -2,7 +2,7 @@
 
 ![logo](Assets/LLamaSharpLogo.png)
 
-[![Discord](https://img.shields.io/discord/1106946823282761851?label=Discord)](https://discord.gg/M2fS4PNj)
+[![Discord](https://img.shields.io/discord/1106946823282761851?label=Discord)](https://discord.gg/7wNVU65ZDY)
 [![QQ Group](https://img.shields.io/static/v1?label=QQ&message=加入QQ群&color=brightgreen)](http://qm.qq.com/cgi-bin/qm/qr?_wv=1027&k=sN9VVMwbWjs5L0ATpizKKxOcZdEPMrp8&authKey=RLDw41bLTrEyEgZZi%2FzT4pYk%2BwmEFgFcrhs8ZbkiVY7a4JFckzJefaYNW6Lk4yPX&noverify=0&group_code=985366726)
 [![LLamaSharp Badge](https://img.shields.io/nuget/v/LLamaSharp?label=LLamaSharp)](https://www.nuget.org/packages/LLamaSharp)
 [![LLamaSharp Badge](https://img.shields.io/nuget/v/LLamaSharp.Backend.Cpu?label=LLamaSharp.Backend.Cpu)](https://www.nuget.org/packages/LLamaSharp.Backend.Cpu)
@@ -171,7 +171,7 @@ Any contribution is welcomed! You can do one of the followings to help us make `
 
 ## Contact us
 
-Join our chat on [Discord](https://discord.gg/quBc2jrz).
+Join our chat on [Discord](https://discord.gg/7wNVU65ZDY).
 
 Join [QQ group](http://qm.qq.com/cgi-bin/qm/qr?_wv=1027&k=sN9VVMwbWjs5L0ATpizKKxOcZdEPMrp8&authKey=RLDw41bLTrEyEgZZi%2FzT4pYk%2BwmEFgFcrhs8ZbkiVY7a4JFckzJefaYNW6Lk4yPX&noverify=0&group_code=985366726)