trivial: Miscellaneous documentation typo fixes

Fix various typos in documentation txts.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Documentation/local_ops.txt

diff --git a/Documentation/local_ops.txt b/Documentation/local_ops.txt
index 23045b8..300da4b 100644
--- a/Documentation/local_ops.txt
+++ b/Documentation/local_ops.txt
@@ -34,7 +34,7 @@
 
 It can be done by slightly modifying the standard atomic operations : only
 their UP variant must be kept. It typically means removing LOCK prefix (on
-i386 and x86_64) and any SMP sychronization barrier. If the architecture does
+i386 and x86_64) and any SMP synchronization barrier. If the architecture does
 not have a different behavior between SMP and UP, including asm-generic/local.h
 in your architecture's local.h is sufficient.