[Midnightbsd-cvs] src: batt.c: fix usage..

[laffer1 at midnightbsd.org]

Log Message:
-----------
fix usage.. it's u not f

Modified Files:
--------------
    src/usr.bin/batt:
        batt.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/usr.bin/batt/batt.c?r1=1.5&r2=1.6)