 canonical document must have a link tag with `rel=alternate` and no `hreflang` attribute
pointing to its matching alternate mobile document in the same language.
* Every alternate mobile document must have a link tag with `rel=canonical` pointing to
its matching canonical desktop document, again, in the same language.
* Every alternate mobile document must have a link tag with `rel=alternate` and an
`hreflang` attribute for each alternative language version of the alternate mobile document.

<a href="/inte