Comment generated by email reply will not respect line breaks

The initial comment generated by the email reply did not include any line breaks. Even after trying to edit the comment, add line breaks/paragraphs, and saving -- it will not apply them.

See link below:

https://github.com/fourkitchens/el-ocp-style/commit/0c59d6aceeaa5b5e2e5a3d37cc8a795d9f950a6d#commitcomment-3368080

從連結的 commit 留言開始，重現從電子郵件回覆產生的留言中缺失的換行。追蹤純文字電子郵件的解析方式，並將完成標準定義為：產生的留言保留段落和換行格式，包括編輯並儲存之後。

由索引模型根據 Issue 內容生成。