Fix bullet points & typo

CONTRIBUTING.md

@@ -3,20 +3,24 @@
 Thanks for considering contributing! This project would not be what it is without the support of the community.
 
 ## Issues
+
 - If reporting a bug, please include the operating system used, any relevant information about the tech stack, and the configuration used.
 
 ## Pull requests
+
 - Before opening the PR, make sure you've built and run it, done the tests locally, and run the formatter/linter.
 - Feel free to pop in on [Discord](https://discord.gg/Dq43JNys6J) to ask for help or clarification on anything related to this project.
 - If possible, check that someone else hasn't recently said that they've taken up an issue.
+- Try to keep your PR focused on a single feature/bug/etc, don't mix them together.
 - Make pull requests from a feature branch on your own fork instead of from `main`.
 
 ## How to create and use a fork:
+
 1. Fork this project.
 2. Clone your fork: `git clone <fork>`.
 3. Add a remote for this project: `git remote add upstream <url>`.
 4. Your fork is ready to go, to create a pull request you can:
-  - Make sure you're starting from `main`: `git switch main`.
-  - Grab any new commits: `git pull upstream dev`.
-  - Create a new brancch: `git switch -c <new-branch>`.
-  - And you're good to go!
+   - Make sure you're starting from `main`: `git switch main`.
+   - Grab any new commits: `git pull upstream dev`.
+   - Create a new branch: `git switch -c <new-branch>`.
+   - And you're good to go!