docs: Updates to multi-window and related docs. am: 4d93a21980 am: 8263d6c0a3 am: c88130c572 am: d29c26073e
am: f975b74c0c

* commit 'f975b74c0c60160092262fbc05f42f7e2584f0bd':
  docs: Updates to multi-window and related docs.

Change-Id: I74022d22deb99d5cd83d7ed73658d65f7aa05fb3