add link to device dock lesson

Author: scottamain

docs/html/guide/topics/resources/providing-resources.jd

@@ -548,6 +548,10 @@ which indicates the current device orientation.</p>
           no display</li>
         </ul>
         <p><em>Added in API level 8, television added in API 13.</em></p>
+        <p>For information about how your app can respond when the device is inserted into or
+        removed from a dock, read <a 
+        href="{@docRoot}training/monitoring-device-state/docking-monitoring.html">Determining
+and Monitoring the Docking State and Type</a>.</p>
         <p>This can change during the life of your application if the user places the device in a
 dock. You can enable or disable some of these modes using {@link
 android.app.UiModeManager}. See <a href="runtime-changes.html">Handling Runtime Changes</a> for