Update "Closing" discussion prompt

[JamesPHoughton]

In a few pilots, we noted that the final prompt in the discussion (Your discussion is coming to an end) is somewhat confusing. It could be improved by:

• making it more explicit that the participants will now move on to other surveys
• asking the participants to say goodbye to one another
• asking participants to do a final cumulative task together? (Group vote?)

Other suggestions?

[willschulz]

I'd love to have the capacity to do a group vote in the future, so I support getting this in the pipeline. But maybe we should review some videos and see where the pain points are. Verbal instructions might help too.