DABs messaging

[saadansari-db]

Added guidance on using Databricks asset bundles

Proposed changes

Updating docs to point users to DABs.

Types of changes

What types of changes does your code introduce to dbx?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ x] Documentation Update (if none of the other choices apply)

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...