Update README.md

README.md

@@ -58,7 +58,7 @@ Source: [AI王　〜クイズAI日本一決定戦〜](https://sites.google.com/v
 - `original_question` (`str`): The original question before any processing or modification.
 - `original_answer` (`str`): The original answer before any processing or modification.
 - `original_additional_info` (`str`): Any additional information provided with the original data.
-- `question` (`str`): The question used for the task.
+- `question` (`str`): The question used for the task. (NFKC 正規化済み)
 - `answers` (`str`): The answer(s) of the question. This included additional answers we manually added to the original dataset.
 - `original_answers` (`str`): The original "answers" of the original aio dataset.