update ag links

Author: SteveLLamb

doc/main.html

@@ -276,7 +276,7 @@ <h2>Organizations, Delegates and Rapporteurs</h2>
   <section id="sec-bibliography">
     <ul>
       <li><cite id="bib-smpte-ag-10b">SMPTE AG-10b</cite>, Liaisons Agreements
-      <a>https://www.smpte.org/about/policies-and-governance</a></li>
+      <a>https://doc.smpte-doc.org/ag-10b/main/</a></li>
       <li><cite id="bib-smpte-ag-10c">SMPTE AG-10c</cite>, Individual Contact Information (private document, updated continuously)</li>
     </ul>
   </section>