fix: add link to taken recipes code

Author: dshemetov

R/new_epipredict_steps/step_yeo_johnson.R

@@ -270,7 +270,10 @@ get_lambdas_yj_table <- function(training, col_names, limits, num_unique, na_lam
     mutate(across(starts_with("lambda_"), \(col) ifelse(is.na(col), na_lambda_fill, col)))
 }
 
-## computes the new data given a lambda
+
+### Code below taken from recipes::step_YeoJohnson.
+### https://github.com/tidymodels/recipes/blob/v1.1.1/R/YeoJohnson.R#L172
+
 #' Internal Functions
 #'
 #' @keywords internal