message: revert minor edit
diff: <html lang="en">
  <head>
  <meta charset="utf-8" />
  - <link rel="icon" href="%PUBLIC_URL%/favicon.png" />
  + <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta name="theme-color" content="#000000" />
  <meta
  