Add man page entry for --force.
Signed-off-by: NSihyeon Jang <uneedsihyeon@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1510837609-6277-1-git-send-email-uneedsihyeon@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>