docs: update badges

Author: jakewvincent

README.md

@@ -5,7 +5,7 @@
       <img alt="Black mkdnflow logo in light color mode and white logo in dark color mode." src="https://raw.githubusercontent.com/jakewvincent/mkdnflow.nvim/main/assets/logo/mkdnflow_logo_light.png">
     </picture>
 </p>
-<p align=center><img src="https://camo.githubusercontent.com/dba3dd4ec5c0640974a4dad6acdef2e5fe9ef9eee3160ff309aa40dcb091b956/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f6c75612d2532333243324437322e7376673f267374796c653d666c6174266c6f676f3d6c7561266c6f676f436f6c6f723d7768697465"></p>
+<p align=center><img src="https://img.shields.io/badge/Lua-2C2D72?style=for-the-badge&logo=lua&logoColor=white"> <img src="https://img.shields.io/badge/Markdown-000000?style=for-the-badge&logo=markdown&logoColor=white"> <img src="https://img.shields.io/badge/NeoVim-%2357A143.svg?&style=for-the-badge&logo=neovim&logoColor=white"></p>
 <p align=center>
    <a href="#-features">Features</a> / <a href="#-installation-and-usage">Installation</a> / <a href="#-starting-a-notebook">Starting a notebook</a> / <a href="#%EF%B8%8F-configuration">Config</a> / <a href="#-commands-and-default-mappings">Commands & mappings</a> / <a href="#%EF%B8%8F-to-do">To do</a> / <a href="#-recent-changes">Recent changes</a> / <a href="#-links">Links</a>
 </p>