update nvim version in readme badge

.github/README.md

@@ -15,7 +15,7 @@
 
 <div align="center">
  
-[![Neovim Minimum Version](https://img.shields.io/badge/Neovim-0.8.0-blueviolet.svg?style=flat-square&logo=Neovim&color=90E59A&logoColor=white)](https://github.com/neovim/neovim)
+[![Neovim Minimum Version](https://img.shields.io/badge/Neovim-0.8.3-blueviolet.svg?style=flat-square&logo=Neovim&color=90E59A&logoColor=white)](https://github.com/neovim/neovim)
 [![GitHub Issues](https://img.shields.io/github/issues/NvChad/NvChad.svg?style=flat-square&label=Issues&color=d77982)](https://github.com/NvChad/NvChad/issues)
 [![Discord](https://img.shields.io/discord/869557815780470834?color=738adb&label=Discord&logo=discord&logoColor=white&style=flat-square)](https://discord.gg/gADmkJb9Fb)
 [![Matrix](https://img.shields.io/badge/Matrix-40aa8b.svg?style=flat-square&logo=Matrix&logoColor=white)](https://matrix.to/#/#nvchad:matrix.org)