Merge "Fix a couple typos and clarify UI requirements for banner images" into mnc-mr-docs am: 7c9712b am: 97c3608
am: cef06ba

* commit 'cef06ba4ed9dde6c51f96f3d0c246c530c175ca3':
  Fix a couple typos and clarify UI requirements for banner images

Change-Id: Id67c91f881ab919d1428849102e4946ff0042530