/usr/share/man/man3/cap_to_name.3.gz is in libcap-dev 1:2.22-1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/cap_from_text.3.gz
/usr/share/man/man3/cap_from_text.3.gz