Alternate link header ignored for all JSON types.

Author: gkellogg

index.html

@@ -5824,7 +5824,7 @@ <h3>LoadDocumentCallback</h3>
         <li>Set <var>documentUrl</var> to the location of the retrieved resource
           considering redirections (exclusive of HTTP status <code>303</code> "See Other" redirects
           as discussed in [[?cooluris]]).</li>
-        <li>If the retrieved resource's <a>Content-Type</a> is not <code>application/ld+json</code>
+        <li>If the retrieved resource's <a>Content-Type</a> is not <code>application/json</code>
           nor any media type with a <code>+json</code> suffix as defined in [[RFC6839]],
           and the response has an HTTP Link Header [[RFC8288]] using the <code>alternate</code> link relation
           with type `application/ld+json`,