docs: App link doc update for M Preview 3
docs: App link doc update for M Preview 3

Change-Id: I9a8843bb2209f9ac12d5d0946dda1e3bdd6f1947

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