Update site repo description

To reflect reality.
diff --git a/content/index.html b/content/index.html
index 0aad7f5..fff278e 100644
--- a/content/index.html
+++ b/content/index.html
@@ -90,7 +90,7 @@
                   <i class="icon github"></i>
                   <a href="https://github.com/apache/incubator-annotator-website" target="_blank">incubator-annotator-website</a>
                 </h3>
-                <div class="description">This site + demo code (soon!)</div>
+                <div class="description">This site and our documentation.</div>
               </div>
               <div class="extra content">
                 <div class="ui horizontal list">