fix(guide): Miscellaneous fixes (#11147)

* fix: miscellaneous fixes

* docs: fix contributing link

* fix: link

* fix: you

* fix: main links

* fix: update source

* fix: update link

* fix: update update link

* fix: [

* fix: remove locale

* fix: update links

* fix: update GitHub link

---------

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

apps/guide/content/docs/legacy/index.mdx

@@ -30,7 +30,7 @@ If you don't know JavaScript but would like to learn about it, here are a few li
 - [JavaScript.info, a modern javascript tutorial](https://javascript.info/)
 - [Codecademy's interactive JavaScript course](https://www.codecademy.com/learn/introduction-to-javascript)
 - [Nodeschool, for both JavaScript and Node.js lessons](https://nodeschool.io/)
-- [MDN's JavaScript guide and full documentation](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
+- [MDN's JavaScript guide and full documentation](https://developer.mozilla.org/docs/Web/JavaScript)
 - [Google, your best friend](https://google.com)
 
 Take your pick, learn some JavaScript, and once you feel like you're confident enough to make a bot, come back and get started!