doc: spelling error changes

Fixed multiple spelling errors.

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Carlos E. Garcia <carlos@cgarcia.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/gpio/consumer.txt b/Documentation/gpio/consumer.txt
index e42f77d..0ff8eb0 100644
--- a/Documentation/gpio/consumer.txt
+++ b/Documentation/gpio/consumer.txt
@@ -41,7 +41,7 @@
 with IS_ERR() (they will never return a NULL pointer). -ENOENT will be returned
 if and only if no GPIO has been assigned to the device/function/index triplet,
 other error codes are used for cases where a GPIO has been assigned but an error
-occured while trying to acquire it. This is useful to discriminate between mere
+occurred while trying to acquire it. This is useful to discriminate between mere
 errors and an absence of GPIO for optional GPIO parameters.
 
 Device-managed variants of these functions are also defined: