Fixing typo on fragments page.
Fixing typo on fragments page.

Change-Id: If8a815621f90855d76cf71bf36725017ec9e6bd8

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