API reference is not online

Change-Id: I8b0fcf8eebe9f24019ef8bf51c84cf4440a30e2b
diff --git a/src/devices/audio/midi.jd b/src/devices/audio/midi.jd
index b6fb99b..cc63984 100644
--- a/src/devices/audio/midi.jd
+++ b/src/devices/audio/midi.jd
@@ -65,9 +65,10 @@
 </p>
 
 <p>
-For details on application programming with the new MIDI APIs, see the
-<a href="https://android-preview.googleplex.com/reference/android/media/midi/package-summary.html">android.media.midi</a>
-package.
+For details on application programming with the new MIDI APIs,
+first download the
+<a href="https://developer.android.com/preview/download.html#docs">preview reference</a>
+and then see the <code>android.media.midi</code> package.
 </p>
 
 <p>