Fix typos in Documentation/: 'N'-'P'

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

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/uml/UserModeLinux-HOWTO.txt b/Documentation/uml/UserModeLinux-HOWTO.txt
index ecee100..dc94401 100644
--- a/Documentation/uml/UserModeLinux-HOWTO.txt
+++ b/Documentation/uml/UserModeLinux-HOWTO.txt
@@ -2031,7 +2031,7 @@
   there are multiple COWs associated with a backing file, a -d merge of
   one of them will invalidate all of the others.  However, it is
   convenient if you're short of disk space, and it should also be
-  noticably faster than a non-destructive merge.
+  noticeably faster than a non-destructive merge.