docs: 📝 simplify and update landing page (#181)

## Description

Updating some things in design repo, the landing page needed to match
what we currently do. Added an image, plus simplified a lot of the text.

Closes #79 

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This PR needs a quick review.

## Checklist

- [ ] Ran spell-check
- [x] Formatted Markdown
- [x] Ran `just run-all`

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Co-authored-by: Signe Kirk Brødbæk <40836345+signekb@users.noreply.github.com>

Author: lwjohnst86