Fix the doc for Notification.FLAG_ONLY_ALERT_ONCE.
Fix the doc for Notification.FLAG_ONLY_ALERT_ONCE.

The logic was opposite.

Change-Id: I62e0b1e6701a4c9990119a1b94918e64783e9b1a

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