used correct database in display annotation test

bob/bio/face/test/test_scripts.py

@@ -28,5 +28,5 @@ def test_display_annotations():
   from bob.bio.face.script.display_face_annotations import main
 
   with bob.bio.base.test.utils.Quiet():
-    parameters = ['-d', 'atnt', '-a', '/very/unlikely/directory', '--self-test']
+    parameters = ['-d', 'dummy', '-a', '/very/unlikely/directory', '--self-test']
     main(parameters)