Update how-to-write-your-first-technical-book.md

[Narcissus91]

Checklist:

• [x] I have read freeCodeCamp's contribution guidelines.
• [x] My pull request has a descriptive title (not a vague title like Update index.md)

Closes #1130

[miyaliu666]

翻译得一如既往的棒~谢谢 @Narcissus91

[miyaliu666]

我明白了，我是发布了你的这篇译文，却在这个 PR 下面给你留言哈哈

[miyaliu666]

抱歉，这个我不小心合并了，需要你重新 pull request