CBQE-0: changes in help info for results_handler.py

Change-Id: I760557ed10e8b61907cbf71aeabab628d23533e7
Reviewed-on: http://review.couchbase.org/27766
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>