Add reminder of requirement to use toggle method

[da-mask]

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Calling the toggleMethod on a toggleable function on a BooleanColumn requires that the id is selected as part of the query, otherwise nothing is passed in. Took a bit of diving to work out what was going on, hopefully this may save someone some time.