Fix javadoc of camera focus distances API.
Fix javadoc of camera focus distances API.

bug:1955650
Change-Id: I073eb533dd1d5fcebbaa430de9af2bf4335c406e

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