docs: update List use .

[psrheartache]

这个 PR 做了什么? (简要描述所做更改)
https://nutui.jd.com/taro/vue/4x/#/zh-CN/component/list
更新List使用说明：
import { List } from '@nutui/nutui-taro';
const app = createApp();
app.use(List);

这个 PR 是什么类型? (至少选择一个)

• docs: 文档改进

这个 PR 涉及以下平台:

• NutUI H5 @nutui/nutui
• NutUI Taro @nutui/nutui-taro

这个 PR 是否已自测:

• 自测 Taro 脚手架使用小程序 & Taro-H5 测试仓库

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.84%. Comparing base (1936803) to head (2a4bfd2).

Additional details and impacted files

@@           Coverage Diff           @@
##               v4    #2985   +/-   ##
=======================================
  Coverage   83.84%   83.84%           
=======================================
  Files         204      204           
  Lines       23218    23218           
  Branches     2541     2541           
=======================================
  Hits        19467    19467           
  Misses       3733     3733           
  Partials       18       18           

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