doc: fix quite a few typos within Documentation

Correct spelling typo in Documentations

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
index 45000f0..f76a044 100644
--- a/Documentation/ABI/testing/sysfs-devices-power
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -164,7 +164,7 @@
 Description:
 		The /sys/devices/.../wakeup_prevent_sleep_time_ms attribute
 		contains the total time the device has been preventing
-		opportunistic transitions to sleep states from occuring.
+		opportunistic transitions to sleep states from occurring.
 		This attribute is read-only.  If the device is not enabled to
 		wake up the system from sleep states, this attribute is not
 		present.