docs: add package summary for spell checker services
docs: add package summary for spell checker services

Change-Id: Iaac3293f941ec117ec28e031d5e24073e1269851

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