Version 1.15.0-beta.7 (1.15.0-beta.7)

When using the $sort agg pipeline stage, it gives the following prompt:

/**
 * Provide any number of field/order pairs.
 */
{
  <<field1>>: <<sortOrder>>, ...
} 

Once you fill in the field and sortOrder, it's unclear that you then have to delete the "..." in order to run the stage.  The error message is not clear either.  Can this be improved?  Do we need the elipsis?