repeats attribute is hardcoded to 1 for group_vfold_cv()

[twest822]

The problem

There's a typo at vfold.R:318:

repeats = 1,

rather than setting repeats = repeats as is done for forming vfold_cv()'s attribute list at vfold.R:128.

Workaround in user code's just to update the attribute to the correct value

crossValidationFolds = group_vfold_cv(..., repeats = repeatCount)
attr(crossValidationFolds, "repeats", exact = TRUE) = repeatCount