ms_driver: Fix subject in the header

Change-Id: I47e688b9fe3aef6679e3c82c641393ab041cbec3
diff --git a/src/osmo_ms_driver/location_update_test.py b/src/osmo_ms_driver/location_update_test.py
index 010c278..dfa33c3 100644
--- a/src/osmo_ms_driver/location_update_test.py
+++ b/src/osmo_ms_driver/location_update_test.py
@@ -1,4 +1,4 @@
-# osmo_ms_driver: Locationg Update Test
+# osmo_ms_driver: Location Update Test
 # Create MS's and wait for the Location Update to succeed.
 #
 # Copyright (C) 2018 by Holger Hans Peter Freyther