Add audio debugging, section tee sink

Change-Id: I927300cbd90883fbc3b01e0019d6b9f410e29d37
diff --git a/src/devices/devices_toc.cs b/src/devices/devices_toc.cs
index 853c629..0a9d150 100644
--- a/src/devices/devices_toc.cs
+++ b/src/devices/devices_toc.cs
@@ -48,6 +48,7 @@
           <li><a href="<?cs var:toroot ?>devices/audio_avoiding_pi.html">Priority Inversion</a></li>
           <li><a href="<?cs var:toroot ?>devices/audio_src.html">Sample Rate Conversion</a></li>
           <li><a href="<?cs var:toroot ?>devices/audio_terminology.html">Terminology</a></li>
+          <li><a href="<?cs var:toroot ?>devices/audio_debugging.html">Debugging</a></li>
         </ul>
       </li>
       <li><a href="<?cs var:toroot ?>devices/bluetooth.html">Bluetooth</a></li>