Merge "Update the N Preview docs now that Studio 2.1 is stable. bug: 28342771" into mnc-mr-docs am: f8e0d7f am: b6491aa
am: 0a33248

* commit '0a33248b1fe6a109bf33dbdf65497b00f12cba35':
  Update the N Preview docs now that Studio 2.1 is stable. bug: 28342771

Change-Id: I91e30aadca32f5cef8f00e8cd52f6e8aa90b2dd9