add informative to other annex

Author: SteveLLamb

doc/main.html

@@ -1834,7 +1834,7 @@ <h3>Complex Example</h3>
 
   </section>
 
-  <section class="annex" id="sec-list-examples">
+  <section class="annex" id="sec-list-examples" data-informative="true">
     <h2>List Examples</h2>
     <section id="sec-ordered-lists">
       <h3>Customizing Ordered Lists</h3>