man: add missing options for commit
man: add missing options for commit

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

Closes: #306
Approved by: cgwalters

GNOME/ostree,gatispaeglis/ostree,GNOME/ostree,gatispaeglis/ostree,gatispaeglis/ostree,gatispaeglis/ostree,GNOME/ostree,GNOME/ostree,gatispaeglis/ostree,gatispaeglis/ostree,GNOME/ostree