Docs: Adding audio attributes to nav

Bug: 17508564
Change-Id: I588458cc71b8ff2d246e22a5202c2a50e4490a89
diff --git a/src/devices/devices_toc.cs b/src/devices/devices_toc.cs
index f953d96..2d62da6 100644
--- a/src/devices/devices_toc.cs
+++ b/src/devices/devices_toc.cs
@@ -33,6 +33,7 @@
         <ul>
           <li><a href="<?cs var:toroot ?>devices/audio_terminology.html">Terminology</a></li>
           <li><a href="<?cs var:toroot ?>devices/audio_implement.html">Implementation</a></li>
+          <li><a href="<?cs var:toroot ?>devices/audio_attributes.html">Attributes</a></li>
           <li><a href="<?cs var:toroot ?>devices/audio_warmup.html">Warmup</a></li>
           <li class="nav-section">
             <div class="nav-section-header">