[Typo]: "Tutorial: Tic-Tac-Toe" document code and actual code in sandbox are inconsistent

[ousugo]

Summary

Page

https://react.dev/learn/tutorial-tic-tac-toe#inspecting-the-starter-code

Details

In the document, the first line of code in index.js is import { StrictMode } from 'react';, but in CodeSandbox, the first line of code is import React, { StrictMode } from "react";