/usr/share/man/man1/lighty-disable-mod.1.gz is in lighttpd 1.4.33-1+nmu2ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/lighty-enable-mod.1.gz
/usr/share/man/man1/lighty-enable-mod.1.gz