Broken link in SWI-Prolog for pengine_send/3

#1

On this page:

http://www.swi-prolog.org/pldoc/doc_for?object=pengine_ask/3

The link to pengine_send/3 leads to page saying the following:

Sorry, No manual entry for pengine_send/3

Here is the target link associated with the above message:

http://www.swi-prolog.org/pldoc/man?predicate=pengine_send/3