Update how-to-write-a-good-technical-tutorial.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 #1124

[Narcissus91]

@miyaliu666 这篇翻译好了。

[miyaliu666]

谢谢 @Narcissus91 这篇已经发布了，我应该是在校对时没有发现问题，就直接发布、没有留言，忘记合并这个 pr 了。