Fix typos in Documentation/: 'Q'-'R'

This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'Q'-'R'.

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/s390/driver-model.txt b/Documentation/s390/driver-model.txt
index 5295a83..62c0823 100644
--- a/Documentation/s390/driver-model.txt
+++ b/Documentation/s390/driver-model.txt
@@ -157,7 +157,7 @@
 	* In online state, device detached (CIO_GONE) or last path gone
 	  (CIO_NO_PATH). The driver must return !0 to keep the device; for
 	  return code 0, the device will be deleted as usual (also when no
-	  notify function is registerd). If the driver wants to keep the
+	  notify function is registered). If the driver wants to keep the
 	  device, it is moved into disconnected state.
 	* In disconnected state, device operational again (CIO_OPER). The
 	  common I/O layer performs some sanity checks on device number and