message: change webpack link in README
  update webpack link from deprecated (https://webpack.github.io/docs/) to modern (https://webpack.js.org/)
diff: <br>
  <p>
  - Electron React Boilerplate uses <a href="https://electron.atom.io/">Electron</a>, <a href="https://facebook.github.io/react/">React</a>, <a href="https://github.com/reactjs/react-router">React Router</a>, <a href="https://webpack.github.io/docs/">Webpack</a> and <a href="https://www.npmjs.com/package/react-refresh">React Fast Refresh</a>.
  + Electron React Boilerplate uses <a href="https://electron.atom.io/">Electron</a>, <a href="https://facebook.github.io/react/">React</a>, <a href="https://github.com/reactjs/react-router">React Router</a>, <a href="https://webpack.js.org/">Webpack</a> and <a href="https://www.npmjs.com/package/react-refresh">React Fast Refresh</a>.
  </p>
  <br>
  