message: Improve readability of video markup
diff: @@ -346,12 +346,13 @@ function renderExampleMediaFor(
  `${shopifyDevAssetsUrl}/components/${filename}.webm`,
  );
  - let hasFile: boolean;
  - let mediaMarkup: string;
  + let hasFile = false;
  + let mediaMarkup = '';
  if (fs.existsSync(mediaMP4) && fs.existsSync(mediaWEBM)) {
  hasFile = true;
  - mediaMarkup = `<video style="width: 100%; height: auto;" autoplay muted loop controls>
  + mediaMarkup = `
  + <video style="width: 100%; height: auto;" autoplay muted loop controls>
  <source src="/assets/api/checkout-extensions/components/${filename}.webm" type="video/webm">
  <source src="/assets/api/checkout-extensions/components/${filename}.mp4" type="video/mp4">
  </video>`;
  