I cannot find a solid example of using the language tag with Next Head. Here are the two best I've seen. Which one, if either, is proper?
Note: It doesnt have to be dynamic.
Option 1
<Head>
<meta property="og:locale" content="en_US" />
...
</Head>
Option 2
<html lang='en'>
<Head>
...
</Head>
</html>
Option 3 (capital Html)
<Html lang='en'>
<Head>
...
</Head>
</Html>