[racket-dev] tiny doc bug?

http://docs.racket-lang.org/data/Orders_and_Ordered_Dictionaries.html

Towards the bottom of this page there is the following error:

 > (datum-order (make-fish 'alewife) (make-fish 'sockeye))
make-fish: undefined;
  cannot reference undefined identifier

Is this intentional?

Thanks,
Dave