Markdown linting is failing

To keep the code consistent with lots of contributors, we run automated code consistency checks.
To fix this CI test, please run:

• Install markdownlint-cli
  • On Mac: brew install markdownlint-cli
  • Everything else: Install npm then install markdownlint-cli (npm install -g markdownlint-cli)
• Fix the markdown errors
  • Automatically: markdownlint . --config .github/markdownlint.yml --fix
  • Manually resolve anything left from markdownlint . --config .github/markdownlint.yml

Once you push these changes the test should pass, and you can hide this comment 👍

We highly recommend setting up markdownlint in your code editor so that this formatting is done automatically on save. Ask about it on Slack for help!

Thanks again for your contribution!