git: sbin/mount_hammer2: Correct description for -u option

[Tomohiro Kusumi]

commit 6663bdc5db49c4ea7e8d997e91f705747dd5f9ec
Author: Tomohiro Kusumi <tkusumi at netbsd.org>
Date:   Fri Oct 9 00:32:15 2020 +0900

    sbin/mount_hammer2: Correct description for -u option
    
    This only does upgrading.

Summary of changes:
 sbin/mount_hammer2/mount_hammer2.8 | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/6663bdc5db49c4ea7e8d997e91f705747dd5f9ec


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