update github action for reviewer checklist

[raynamharris]

PR Checklist

• [x] Release label added
• [ ] PR category label added
• [x] PR mergeable
• [x] Clean build logs
• [ ] Linked related issues
• [ ] Colorblindness test https://www.toptal.com/designers/colorfilter/

PR Description

This PR should fix the PR reviewer checklist that is created by a bot. Currently, the text does not render as clickable boxes like the ones above.

Preview link

https://cfde-training-and-engagement--490.com.readthedocs.build/en/490/

Review format

I'm not sure how to test if this is working correctly or not. Suggestions welcome.

Timeline

No rush

[github-actions[bot]]

Reviewer Checklist

• [ ] spelling and grammar
• [ ] successful run of all installation and code chunks
• [ ] sufficient explanation and details for the tutorial content
• [ ] code syntax and naming convention
• [ ] adherence of tutorial format to style guide
• [ ] functional links (inter and intra)
• [ ] accessible hyperlink text