message: fix library source
diff: </main>
  - <script type="text/javascript" src="index.min.js"></script>
  + <script type="text/javascript" src="https://unpkg.com/@zxing/library@latest"></script>
  <script type="text/javascript">
  window.addEventListener('load', function () {
  const codeReader = new ZXing.BrowserPDF417Reader()
  