doc: Fix link to model in getting started doc

[jeff-phillips-18]

What

Closes #78

Description

Update the url to the code for the Model type in the getting started doc page.

Type of change

• [x] Documentation content changes

[nicolethoen]

Feel free to merge today if you want this in for v5

[github-actions[bot]]

:tada: This PR is included in version 5.0.0-prerelease.3 :tada:

The release is available on:

• GitHub release
• npm package (@prerelease dist-tag)

Your semantic-release bot :package::rocket: