docs: 修复文档中 ReactDOM 引入错误的问题 (#2156)

Author: demigodliu

site/docs/tutorial/framework/react.zh.md

@@ -16,7 +16,7 @@ npm install @antv/f-react --save
 
 ```jsx
 import React from 'react';
-import ReactDOM from 'react';
+import ReactDOM from 'react-dom';
 import Canvas from '@antv/f-react';
 import { Chart, Interval } from '@antv/f2';