Updates to launch checklist based on feedback

[jeff-matthews]

This pull request (PR):

• Changes the format of the launch checklist so that it's more engaging (clickable check boxes).
• Strengthens the language about the importance of launch planning and preparing a rollback plan.
• Adds additional info about planning and iterative rollouts from internal deck to the "discovery" landing page.
  • Spruce up iterative rollout diagram to match aesthetic of site
  • Combine "tips for a successful launch" with existing "project scope" section

Note

The goal is to make sure it's clear that customers/partners must complete all of the launch tasks before going live to avoid issues.

Staging

• https://commerce-docs.github.io/microsite-commerce-storefront/discovery/#project-scope
• https://commerce-docs.github.io/microsite-commerce-storefront/launch/#launch-checklist

[herzog31]

LGTM

On the staging link the go-live list has a black font color which makes the page very difficult to read. Is this intended?

[jeff-matthews]

Thanks for catching that @herzog31. No, that's not intended and needs to be fixed.