Update README Quick Deploy Instructions (DeploymentGuide)

[honestypugh2]

The most recent release of the repo

took place 3 days ago and the README was last updated a month ago,

.

The README's DeploymentGuide.md mentions Publishing to Azure Container Registry

but from following the Deployment instructions using AZD, Azure Container Registry resource is not deployed.

Please update the README and DeploymentGuide to reflect release deployment instructions.

[Vamshi-Microsoft]

Thanks @honestypugh2 for reporting, we will look into this and keep you posted.