4.4.0-98.121) is not available, but a newer one is (4.4.0-142.168). We redirected you there.
/usr/share/man/man1/odt2html.1.gz is in unoconv 0.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/unoconv.1.gz