wapbl.4 correction

Hi,

mount_ffs requires block device:

# mount -o log /dev/rwd1h /mnt 

mount_ffs: /dev/rwd1h on /mnt: Block device required

r.

--- src/share/man/man4/wapbl.4.orig	2009-11-22 01:08:15.000000000 +0100
+++ src/share/man/man4/wapbl.4	2009-11-22 01:08:51.000000000 +0100
 <at>  <at>  -100,7 +100,7  <at>  <at> 
 option.
 For existing file systems and general use, however, simply using
 .Bd -literal -offset indent
-mount -o log /dev/rwd0a /mnt
+mount -o log /dev/wd0a /mnt
 .Ed
 .Pp
 will be sufficient to create an appropriate journal within the file
 <at>  <at>  -118,7 +118,7  <at>  <at> 
 .Pp
 followed by
 .Bd -literal -offset indent
-mount -o log /dev/rwd0a /mnt
+mount -o log /dev/wd0a /mnt
 .Ed
 .Pp
 will remove the log and then re-create it with the default size.