It's there ... it's just down in the "future page" section.
By default the table of contents is added automatically near the top of every page. But if you want to control where it shows up (like whoever setup the zone pages did, and I just copied that format), you can control where it goes by using:
So if you just remove that bit from down in the "future page" section, then it will start appearing in the normal place. And if you don't like it there, just paste that bit of text wherever you want it to show up.