lambda-less make-list-function sample has incorrectly placed parens

[kisaragi-hiu]

https://github.com/mbutterick/pollen-tfl/blob/master/scribblings/pollen-rkt.scrbl#L443

This has no expression after the initial nested define.

(define (make-list-function tag [attrs empty])
  (define (listifier . args)
    (list* tag attrs (detect-list-items args))
    listifier))

This is the currect version.

(define (make-list-function tag [attrs empty])
  (define (listifier . args)
    (list* tag attrs (detect-list-items args)))
  listifier)

[mbutterick]

Thanks!