Fix (unreported) missing updates in scripts/docs after scene.update() removal.

This should really have been done together with API changes, simple
usage of grep does the trick to catch most places needing updates.

tests/python/view_layer/test_make_single_user.py

@@ -39,7 +39,7 @@ class UnitTesting(ViewLayerTesting):
         ob.select_set(True)
 
         # update depsgraph
-        scene.update()
+        view_layer.update()
 
         # test itself
         bpy.ops.object.make_single_user(object=True)