Add p5.nvim reference to environment setup tutorial

Author: prjctimg

src/content/tutorials/en/setting-up-your-environment.mdx

@@ -479,4 +479,5 @@ If you are using a screen reader, use the [p5.js Web Editor](https://editor.p5js
 - [p5.js with VSCode](https://www.youtube.com/watch?v=zMAnM9ly0a8) (video tutorial)
 - [VSCode Overview](https://code.visualstudio.com/docs/getstarted/introvideos)
 - [p5.vscode reference](https://github.com/antiboredom/p5.vscode/blob/master/README.md)
+- [p5.nvim reference](https://github.com/prjctimg/p5.nvim/blob/main/README.md)
 - Browser consoles in [Chrome](https://developer.chrome.com/docs/devtools/console/reference/) | [Firefox](https://firefox-source-docs.mozilla.org/devtools-user/web_console/) | [Safari](https://support.apple.com/guide/safari-developer/safari-developer-tools-overview-dev073038698/11.0/mac/10.13) | [Edge](https://learn.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/console/)