core.html.normalize
#item input.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
</head>
<body>
This is<b> a</b> test
</body>
</html>
#item expected
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
  </head>
  <body>
    <p>
      <span>This is </span><span style="font-weight: bold">a</span><span> test</span>
    </p>
  </body>
</html>