API summary links don't go anywhere

When I click on a link on the api-reference-summary.html page for about half of the methods, it doesn't go anywhere. The others do go to an appropriate sub-page. Something broken with the docs generation?

For example, currently the .Append() methods go to the right place, but the .ExecuteAppend() do not. It's not just the Execute* methods that are broken, though. I think this affects the 1.1 docs as well.