message: Use MUI List in welcome plugin
diff: */
  import React, { FC } from 'react';
  -import Link from '@material-ui/core/Link';
  import { Link as RouterLink } from 'react-router-dom';
  -import { Typography, Grid } from '@material-ui/core';
  +import {
  + Typography,
  + Grid,
  + List,
  + ListItem,
  + ListItemText,
  + Link,
  +} from '@material-ui/core';
  import Timer from '../Timer';
  import {
  Content,
  @@ -28,8 +34,6 @@ import {
  ContentHeader,
  SupportButton,
  } from '@spotify-backstage/core';
  -import List from '@material-ui/core/List';
  -import ListItem from '@material-ui/core/ListItem';
  const WelcomePage: FC<{}> = () => {
  const profile = { givenName: '' };
  @@ -64,14 +68,20 @@ const WelcomePage: FC<{}> = () => {
  Backstage is put together from three base concepts: the core,
  the app and the plugins.
  </Typography>
  - <ul>
  - <li>The core is responsible for base functionality.</li>
  - <li>The app provides the base UI and connects the plugins.</li>
  - <li>
  - The plugins make Backstage useful for the end users with
  - specific views and functionality.
  - </li>
  - </ul>
  + <List>
  + <ListItem>
  + <ListItemText primary="The core is responsible for base functionality." />
  + </ListItem>
  + <ListItem>
  + <ListItemText primary="The app provides the base UI and connects the plugins." />
  + </ListItem>
  + <ListItem>
  + <ListItemText
  + primary="The plugins make Backstage useful for the end users with
  + specific views and functionality."
  + />
  + </ListItem>
  + </List>
  <Typography variant="h6" gutterBottom>
  Try It Out
  </Typography>
  