refactor: rename Step attribute done to acceptance in test data

Author: ChesterRa

tests/test_storage.py

@@ -203,8 +203,8 @@ def test_save_and_load_task(self, storage):
             goal="Complete testing",
             status=TaskStatus.ACTIVE,
             steps=[
-                Step(id="S1", name="Step 1", done="Done 1", status=StepStatus.DONE),
-                Step(id="S2", name="Step 2", done="Done 2", status=StepStatus.IN_PROGRESS),
+                Step(id="S1", name="Step 1", acceptance="Done 1", status=StepStatus.DONE),
+                Step(id="S2", name="Step 2", acceptance="Done 2", status=StepStatus.IN_PROGRESS),
             ],
         )