docs: added express checkout guide

[shahednasser]

Closes DX-1072

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7a6b98e

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
api-reference	🔄 Building (Inspect)	Visit Preview	💬 Add feedback	Feb 12, 2025 11:53am
api-reference-v2	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 12, 2025 11:53am
docs-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 12, 2025 11:53am
docs-v2	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 12, 2025 11:53am
medusa-dashboard	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 12, 2025 11:53am
resources-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 12, 2025 11:53am

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
medusa-docs	⬜️ Ignored (Inspect)	Visit Preview		Feb 12, 2025 11:53am

[github-actions]

This PR is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.