docs: update highlights doc to remove preview
docs: update highlights doc to remove preview

Change-Id: Iebee41237eec8f64d9b610a401a2180b68561efa

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base