Some pages don't have navigation links at the bottom
@cshapiro wrote to me that some pages are missing navigation links at the bottom. Compare the pages:
- https://cmucl.common-lisp.dev/docs/cmu-user/html/The-SERVE_002dEVENT-Function.html
- https://cmucl.common-lisp.dev/docs/cmu-user/html/Without-Object-Sets.html
The second doesn't have any navigation links at the bottom of the page. Not sure why.