Broken Link Checker - Card Support

[adamhill-payroc]

How important is this?

P2 - Medium (Would be helpful)

What's the feature?

Related: #5602

The broken links checker doesn't seem to pick up errors in <Card href>. It would be handy if it did, and any other HTML or MDX links, as otherwise it can give a false confidence.

    <Card 
        title='Add Google Pay to your integration'
        icon='fa-brands fa-google-pay' 
        href='/some-bad-link-here'
    >