Update doc str of is_copy_only_path()
Update doc str of is_copy_only_path()

michaeljoseph/cookiecutter,pjbull/cookiecutter,michaeljoseph/cookiecutter,stevepiercy/cookiecutter,hackebrot/cookiecutter,audreyr/cookiecutter,terryjbates/cookiecutter,dajose/cookiecutter,terryjbates/cookiecutter,dajose/cookiecutter,stevepiercy/cookiecutter,luzfcb/cookiecutter,audreyr/cookiecutter,luzfcb/cookiecutter,pjbull/cookiecutter,hackebrot/cookiecutter