[docs] LineChart stackblitz link creates a broken application

[Janpot]

Steps to reproduce

Link to live example: https://stackblitz.com/run?file=Demo.tsx

Steps:

1. Open https://mui.com/x/react-charts/line-demo/#simplelinechart
2. Click the stackblitz link for the first demo

Current behavior

Expected behavior

A working stackblitz application

Context

Discovered while reporting #13611

Your environment

npx @mui/envinfo

  Don't forget to mention which browser you used.
  Output from `npx @mui/envinfo` goes here.

Search keywords: stackblitz

[michelengelen]

Thanks @Janpot 👍🏼