Description of problem:
=======================
Missing man page for FcPatternFormat(3); it's missing also in info.
Missing Page:
https://linux.die.net/man/3/fcpatternformat
Version-Release number of selected component:
============================================
man-pages-6.06-1.fc40.noarch
fontconfig-2.15.0-6.fc40.x86_64
All the man pages regarding API is available in fontconfig-devel subpackage.
$ rpm -qf /usr/share/man/man3/FcPatternFormat.3.gz
fontconfig-devel-2.15.0-6.fc40.x86_64