message: simplify asset path expansion
diff: @@ -19,14 +19,16 @@ export default class MyDocument extends Document {
  __NEXT_DATA__: {assetPrefix = ''}
  } = this.props
  + const asset = path => assetPrefix + path
  +
  return (
  <html lang="en">
  <Head>
  <title>primer-react</title>
  <meta charSet="utf8" />
  - <link rel="icon" href={`${assetPrefix}/static/assets/favicon.png`} />
  - <link rel="apple-touch-icon" href={`${assetPrefix}/static/assets/apple-touch-icon.png`} />
  - <link rel="stylesheet" href={`${assetPrefix}/_next/static/style.css`} />
  + <link rel="icon" href={asset('/static/assets/favicon.png')} />
  + <link rel="apple-touch-icon" href={asset('/static/assets/apple-touch-icon.png')} />
  + <link rel="stylesheet" href={asset('/_next/static/style.css')} />
  <meta name="viewport" content="width=device-width,initial-scale=1" />
  <meta name="generator" content="Compositor X0" />
  <meta name="og:title" content="Primer React" />
  