Edit requests of PHPで改行コードを統一する関数: CRLF, CR, LF が混在してる文字列を LF に変換するなど

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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.