feat: update discard invite link (#18)

* feat: Update README.md

* feat: Update README_CN.md

Author: weiwenhao

README.md

@@ -134,7 +134,7 @@ For information on source code directory structure, compilation, and related res
 
 For ideas and questions, it is recommended to use GitHub issues to facilitate wider attention and participation.
 
-Discord: [https://discord.gg/xYYkVaKZ](https://discord.gg/xYYkVaKZ)
+Discord: [https://discord.gg/s5x542RF](https://discord.gg/s5x542RF)
 
 微信: Add WeChat ID `nature-lang` and mention "申请加群"
 

README_CN.md

@@ -127,7 +127,7 @@ nature 基于 ANSI C11 和 musl libc 进行开发。源码上追求简单可读
 
 想法和问题推荐使用 github issue 进行讨论让更多人能够关注并参与。
 
-discard: [https://discord.gg/xYYkVaKZ](https://discord.gg/xYYkVaKZ)
+discard: [https://discord.gg/s5x542RF](https://discord.gg/s5x542RF)
 
 微信群: 添加微信号 `nature-lang` 备注 “申请加群”