Fix typo

[koba-e964]

ローカルでのテスト中に気になったところを直しました

[maspypy]

修正はかなり何の問題もなさそうなので、test を rerun するのを試していますが（rerun でうまくいったこともある）なかなかうまくいかない

[koba-e964]

こんな感じのログが出ているのでファイルの閉じ忘れかもしれないですね

2024-04-29T10:56:13.8952240Z /Users/runner/work/library-checker-problems/library-checker-problems/problem.py:441: ResourceWarning: unclosed file <_io.TextIOWrapper name='string/zalgorithm/hash.json' mode='r' encoding='UTF-8'>
2024-04-29T10:56:13.8953310Z   expect = json.load(open(str(self.basedir / 'hash.json'), 'r'))
2024-04-29T10:56:13.8953860Z ResourceWarning: Enable tracemalloc to get the object allocation traceback
2024-04-29T10:56:13.8954940Z /Users/runner/work/library-checker-problems/library-checker-problems/problem.py:430: ResourceWarning: unclosed file <_io.BufferedReader name='string/zalgorithm/in/all_same_01.in'>
2024-04-29T10:56:13.8955760Z   m.update(open(str(name), 'rb').read())
2024-04-29T10:56:13.8956160Z ResourceWarning: Enable tracemalloc to get the object allocation traceback

2024-04-29T10:56:13.8963730Z /Users/runner/work/library-checker-problems/library-checker-problems/problem.py:430: ResourceWarning: unclosed file <_io.BufferedReader name='string/zalgorithm/in/binary_carry_00.in'>
2024-04-29T10:56:13.8964540Z   m.update(open(str(name), 'rb').read())
2024-04-29T10:56:13.8964930Z ResourceWarning: Enable tracemalloc to get the object allocation traceback
2024-04-29T10:56:13.8966400Z /Users/runner/work/library-checker-problems/library-checker-problems/problem.py:430: ResourceWarning: unclosed file <_io.BufferedReader name='string/zalgorithm/in/all_same_00.in'>
2024-04-29T10:56:13.8967250Z   m.update(open(str(name), 'rb').read())
2024-04-29T10:56:13.8967650Z ResourceWarning: Enable tracemalloc to get the object allocation traceback