message: Remove favicon-192x192.png reference
  The favicon-192x192.png file is missing and is no longer needed.
diff: <link rel="icon" type="image/png" href="/docs/assets/img/meta/favicon-16x16.png" sizes="16x16">
  <link rel="icon" type="image/png" href="/docs/assets/img/meta/favicon-32x32.png" sizes="32x32">
  <link rel="icon" type="image/png" href="/docs/assets/img/meta/favicon-96x96.png" sizes="96x96">
  - <link rel="icon" type="image/png" href="/docs/assets/img/meta/favicon-192x192.png" sizes="192x192">
  <link rel="stylesheet" href="/docs/build/app.css">
  </head>
  