[PHP-DOC] Function References not showing up in docs for mixed case function names

[Daniel Beckham]

This is strange, for some reason, function references in the PDF section are
not working.  It only bolds the function name, but does not link it to the
actual html document.  I also checked the functions in the Graphics section
and some of the links are working, some are not. It appears the difference
between the linked function names and non-linked function names is that the
non-linked function names are mixed case, while any that are all lowercase
work just fine.  Anyone know anything about this?   Can this be corrected?

e.g.
http://php.net/manual/en/function.pdf-findfont.php
http://php.net/manual/en/function.imagegif.php

Daniel