/usr/share/man/man8/mkfs.ntfs.8.gz is in ntfs-3g 1:2015.3.14AR.1-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man8/mkntfs.8.gz
/usr/share/man/man8/mkntfs.8.gz