[XQZone General] Wrong link to functions reference

[Raffaele Sena]

Hello there!

I just notice something on the xqzone website.

If you go to the how-to tab and click on the "MarkLogic Server Built-ins" at
the top of the right sidebar you go for a walk on memory lane, since it
brings you to the API for Content Interaction Server 2.1

All the other places seems to have the right link to the 2.2 APIs.

-- Raffaele