Fix typos in /Documentation : 'U-Z'

This patch fixes typos in various Documentation txts. The patch addresses some
+words starting with the letters 'U-Z'.

Looks like I made it through the alphabet...just in time to start over again
+too!  Maybe I can fit more profound fixes into the next round...?  Time will
+tell. :)

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/scsi/ibmmca.txt b/Documentation/scsi/ibmmca.txt
index b168743..745f3cc 100644
--- a/Documentation/scsi/ibmmca.txt
+++ b/Documentation/scsi/ibmmca.txt
@@ -461,7 +461,7 @@
       This needs the RD-Bit to be disabled on IM_OTHER_SCSI_CMD_CMD which 
       allows data to be written from the system to the device. It is a
       necessary step to be allowed to set blocksize of SCSI-tape-drives and 
-      the tape-speed, whithout confusing the SCSI-Subsystem.
+      the tape-speed, without confusing the SCSI-Subsystem.
    2) The recognition of a tape is included in the check_devices routine.
       This is done by checking for TYPE_TAPE, that is already defined in
       the kernel-scsi-environment. The markup of a tape is done in the