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>
diff --git a/Documentation/fb/sh7760fb.txt b/Documentation/fb/sh7760fb.txt
index c87bfe5..b994c3b 100644
--- a/Documentation/fb/sh7760fb.txt
+++ b/Documentation/fb/sh7760fb.txt
@@ -1,7 +1,7 @@
 SH7760/SH7763 integrated LCDC Framebuffer driver
 ================================================
 
-0. Overwiew
+0. Overview
 -----------
 The SH7760/SH7763 have an integrated LCD Display controller (LCDC) which
 supports (in theory) resolutions ranging from 1x1 to 1024x1024,