Update validator.py

Author: aditya1503

src/cleanlab_codex/validator.py

@@ -182,6 +182,7 @@ def validate(
         loop.close()
         if is_bad_response:
             if expert_answer == None:
+                # TODO: Make this async as well
                 self._project._sdk_client.projects.entries.add_question(
                     self._project._id, question=query,
                 ).model_dump()