Corrected variable name in rake task
Corrected variable name in rake task

www.agileplannerapp.com/boards/173808/cards/3407

the rake task was using an undefined variable,
users_to_remind. also, corrected the output to
make it simpler.

alphagov/signonotron2,alphagov/signonotron2,alphagov/signonotron2,alphagov/signonotron2