Change `node-sass` to `sass` because `node-sass` is deprecated

Created by: jhxxs

Is your proposal related to a problem?

I build a small demo based on CRA, yet I encountered a problem where some sass features can't work, like @use "sass.string" and some other built-in modules. At first I am using node-sass recommended by CRA documentation. After trying different solutions and reviewing github issues, I found a very efficient way.

配合CRA搭建demo看sass官网文档时发现有些特性不支持，把create-react-app官方文档推荐的node-sass换成sass就ok了。

Describe the solution you'd like

If you want use new features of sass, please remove node-sass module in your CRA project and use sass instead.

npm uninstall node-sass
npm i sass --save

Additional context

Hope CRA documentation would change it or at least append a tip.