Review GitHub tutorials and examples of other repos with markdown file structures

[jaclinec]

Epic issue #469

Review tutorials and articles:

• https://dev.to/danishzayan/creating-beautiful-markdown-files-in-github-5ga3#:~:text=It%20allows%20you%20to%20add,to%20visualize%20the%20final%20result
• https://digital.gov/resources/an-introduction-github/
• https://docs.github.com/en/repositories/creating-and-managing-repositories/quickstart-for-repositories
• https://docs.github.com/en/repositories/creating-and-managing-repositories/creating-a-new-repository
• https://kbroman.org/github_tutorial/pages/init.html
• https://www.markdownguide.org/cheat-sheet/
• https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax

Review other GitHub repositories that use markdown file structures where we might glean ideas:

• https://github.com/alphagov/forms/tree/main/research
• USWDS ADR: https://github.com/uswds/uswds-proposals/tree/main/decisions
• va.gov-team repo: https://github.com/department-of-veterans-affairs/va.gov-team

Take notes for anything you found particularly helpful in this GitHub markdown file learnings doc.

Definition of done:
We've reviewed all materials and added any noteworthy things in our notes doc.