Edit requests of 仕様変更に弱いからテストは書かない……？(´・ω・`)＜仕様変更を想定するならテストを書いてくれ頼む

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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.