docs: fix link to messages doc
docs: fix link to messages doc

Change-Id: I382a2ec26634f8d7427344657de0a66b187562cb

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