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/gpio.txt b/Documentation/gpio.txt
index 145c25a..e4b6985 100644
--- a/Documentation/gpio.txt
+++ b/Documentation/gpio.txt
@@ -458,7 +458,7 @@
 value instead of just showing a gpio state summary.  Plus, it could be
 present on production systems without debugging support.
 
-Given approprate hardware documentation for the system, userspace could
+Given appropriate hardware documentation for the system, userspace could
 know for example that GPIO #23 controls the write protect line used to
 protect boot loader segments in flash memory.  System upgrade procedures
 may need to temporarily remove that protection, first importing a GPIO,