#lang scribble/manual
  @(require scribble/eval    ; <--- added
            "helper.rkt"     ; <--- added
            (for-label racket
                       "helper.rkt"))
  
  @title{My Library}
  
  @defmodule[my-lib/helper]{The @racketmodname[my-lib/helper]
  module---now with extra cows!}
  
  @defproc[(my-helper [lst list?])
           (listof (not/c (one-of/c 'cow)))]{
  
   Replaces each @racket['cow] in @racket[lst] with
   @racket['aardvark].
  
   @examples[
     (my-helper '())
     (my-helper '(cows such remarkable cows))
   ]}