Edit requests of 【Rails】ひらがな入力を必須にして海外スパムボットによるお問い合わせフォーム送信を禁止する

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We released Markdown parser changes on February 24, 2022. There may be some unexpected appearance changes in this update, because this article was posted before the changes.
Please don't forget to check the preview before updating your article.
For more information on the changes, please read this article.