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

* commit 'f8e0d7f5f14b01b92a584ac2768029f5e8869bef':
  Update the N Preview docs now that Studio 2.1 is stable. bug: 28342771

Change-Id: Ifb24f4cea16b7f7896110dac3759d4140b1f5fd9