trivial: fix typo in tracing documentation

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/trace/events.txt b/Documentation/trace/events.txt
index 78c45a8..02ac6ed 100644
--- a/Documentation/trace/events.txt
+++ b/Documentation/trace/events.txt
@@ -72,7 +72,7 @@
 
 	# echo 1 > /sys/kernel/debug/tracing/events/sched/enable
 
-To eanble all events:
+To enable all events:
 
 	# echo 1 > /sys/kernel/debug/tracing/events/enable