Fix punctuation and typos in AllocationAdapter's documentation.
Fix punctuation and typos in AllocationAdapter's documentation.

Change-Id: I5574ff201b857a29f30ebe8413dbe4128dcff3ae
(cherry picked from commit 115b4117a0c19a31231d4df5f2b73c6c88e6726c)

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