Update __init__.py

Fix the fix for #424

bindings/Sofa/package/__init__.py

@@ -394,5 +394,5 @@ def import_sofa_python_scene(path_to_scene : str):
  if not hasattr(module_name, "createScene"):
  raise Exception("Unable to find 'createScene' in module "+path_to_scene)
 
- return foo
+ return module_name