hwclock: improve wording and formatting of man page

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
libblkid: (nilfs) fix typo

Signed-off-by: Boris Egorov <egorov@linux.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
fdisk: missing break in switch

Signed-off-by: Boris Egorov <egorov@linux.com>
Signed-off-by: Karel Zak <kzak@redhat.com>