Fix typos in Documentation/: 'S'

This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letter 'S'.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Alan Cox <alan@redhat.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/usb/URB.txt b/Documentation/usb/URB.txt
index a49e5f2..8ffce74 100644
--- a/Documentation/usb/URB.txt
+++ b/Documentation/usb/URB.txt
@@ -184,7 +184,7 @@
 Note that even when an error (or unlink) is reported, data may have been
 transferred.  That's because USB transfers are packetized; it might take
 sixteen packets to transfer your 1KByte buffer, and ten of them might
-have transferred succesfully before the completion was called.
+have transferred successfully before the completion was called.
 
 
 NOTE:  ***** WARNING *****