Update README with information about content migration

[ty2k]

This PR updates the README with a note about content migration on DevHub. But mainly it exists to let me deploy changes to the master branch from #1771 .

[devhub-cicd]

Fancy seeing you here partner 🤠
I'm @deploy-tron. First time seeing me? Run @deploy-tron help to get started.

Keep in mind only authorized users will be able to trigger commands :)

[ty2k]

@deploy-tron deploy web to dev

[devhub-cicd]

Deployment Created

Deployment 651961428 to development created :)

The deployment has the following payload which you can integrate with your ci/cd service.

{"microservice":"web","pr":1773,"user":"ty2k"}

[ty2k]

@deploy-tron deploy web to test

[devhub-cicd]

Deployment Created

Deployment 651982872 to staging created :)

The deployment has the following payload which you can integrate with your ci/cd service.

{"microservice":"web","pr":1773,"user":"ty2k"}

[github-actions]

Deployment to staging succeeded!

[ty2k]

@deploy-tron deploy web to prod

[devhub-cicd]

Deployment Created

Deployment 651987795 to production created :)

The deployment has the following payload which you can integrate with your ci/cd service.

{"microservice":"web","pr":1773,"user":"ty2k"}

[github-actions]

Deployment to production succeeded!

[github-actions]

Cleaning up dev artifacts and build artifacts