fix typo

[Shinolr]

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 #XXXXX

[miyaliu666]

谢谢，我已经在译文中修改，稍后会显示正确的词。对于文章中的错误，以后请在论坛反馈吧。