Update README

CONTRIBUTING.md

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+See https://github.com/TurboWarp/docs#writing-content

README.md

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 This repository contains documentation for TurboWarp.
 
-Built with [Docusaurus](https://docusaurus.io/). Documentation is inside the `docs` folder, generally that is all you will have to touch. We accept pull requests.
+## Writing content
 
-To build locally locally:
+If you found a typo, have a suggestion, the easiest way to get it fixed is to post about it on this Scratch profile and it will get fixed quickly: https://scratch.mit.edu/users/GarboMuffin/#comments
+
+Alternatively, you can submit a pull request containing a fix. The easiest way to edit a page is:
+
+1. Open the website, https://docs.turbowarp.org/
+2. Find the page you want to edit
+3. Click "Edit this page" at the bottom
+4. Sign in with a GitHub account
+5. Fork the repository
+6. Use the GitHub editor to modify the file. It uses [Markdown syntax](https://www.markdownguide.org/basic-syntax/).
+7. Click "Propose Changes"
+
+If you'd like to write a new page, we'd prefer that you ask us first before you spend much time writing.
+
+## Local Development
+
+This website is built with [Docusaurus](https://docusaurus.io/). Documentation is inside the `docs` folder, generally that is all you will have to touch. We accept pull requests.
 
 ```bash
 npm install