* Document Destroy Async
Motivation:
  - Add docs for Destroy async. I think I probably need to add
    information about setting up active job, but I am not sure where we
    want this, so I am putting this together to start conversation.

Related Issues:
  - #41093

* Active Job not ActiveJob

* Fix some spelling issues

[Cory Gwin, Rafael Mendonça França, Eileen M. Uchitelle, Henrik Nyh]