tests: fix typo

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
diff --git a/tests/devices-test.c b/tests/devices-test.c
index c04d9c5..7278cff 100644
--- a/tests/devices-test.c
+++ b/tests/devices-test.c
@@ -296,7 +296,7 @@
 	assert(cl->input->caps == WL_SEAT_CAPABILITY_ALL);
 }
 
-TEST(get_device_afer_destroy_multiple)
+TEST(get_device_after_destroy_multiple)
 {
 	int i;