Add reminder of requirement to use toggle method

[da-mask]

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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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.44%. Comparing base (6598b25) to head (df4b622).
Report is 27 commits behind head on development.

Additional details and impacted files

@@              Coverage Diff               @@
##             development    #2208   +/-   ##
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  Coverage          91.44%   91.44%           
  Complexity          1995     1995           
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  Files                212      212           
  Lines               4499     4499           
==============================================
  Hits                4114     4114           
  Misses               385      385           

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[lrljoe]

Awesome, to save me a few minutes, please could you add in a link to go to the placeholder for setAdditionalSelects:

datatable/available-methods#content-setadditionalselects

So that it makes it obvious how to add the "id" field in as an additional select via the configure() method