Update the N Preview docs now that Studio 2.1 is stable. bug: 28342771 am: 96e6abb2 am: 39a59d0c
am: 86c6f97b
* commit '86c6f97b':
Update the N Preview docs now that Studio 2.1 is stable. bug: 28342771
Change-Id: I9d1d81f463768db9f841fe639229702fbca807e6