black fixes

Author: wiktor-flex

flow360/examples/tutorial_UDD_dynamic_grid_rotation.py

@@ -9,4 +9,4 @@ class TutorialUDDDynamicGridRotation(BaseTestCase):
     name = "tutorialUDDDynamicGridRotation"
 
     class url:
-        mesh = "https://simcloud-public-1.s3.amazonaws.com/udd/rotatingPlate.cgns"
+        mesh = "https://simcloud-public-1.s3.amazonaws.com/udd/rotatingPlate.cgns"