Fix some wrong translation in Chinese version

[shenlvmeng]

• "function is not a function" / "It's just a bug that has now been fixed" => “这只是一个错误，现在它已被修复”
• "undefined and Number" / "According to the specification:" => “根据规范”
• "Calling functions with backticks" / "This is the magic behind famous library called 💅 styled-components, which is popular in the React community. Link to the specification:" => “这是💅 styled-components这个React社区很流行的库背后的秘密 规范的链接”
• "Object as a key of object's property" / remove useless translation
• "arguments and arrow functions" / remove useless original sentences

[denysdovhan]

Hope you're doing it right.

[shenlvmeng]

Thanks for your trust 😄