Update index.html

Co-authored-by: Gregg Kellogg <gregg@greggkellogg.net>

Author: OR13

index.html

@@ -13425,7 +13425,7 @@ <h2>IANA Considerations</h2>
   <p>This section has been submitted to the Internet Engineering Steering
     Group (IESG) for review, approval, and registration with IANA.</p>
 
-  <section>
+  <section id="media-type-ld-json">
     <h3>application/ld+json</h3>
     <dl>
       <dt>Type name:</dt>