docs: add update information to some samples

Change-Id: Ifafa507bd9e74f2605fe190b12f831051af5f422
diff --git a/samples/RandomMusicPlayer/_index.html b/samples/RandomMusicPlayer/_index.html
index f719fad..f1d9769 100644
--- a/samples/RandomMusicPlayer/_index.html
+++ b/samples/RandomMusicPlayer/_index.html
@@ -4,7 +4,7 @@
 streamed.  It also illustrates how to use the notification system to indicate
 an ongoing task and how to deal with audio focus changes.</p>
 
-<p><strong>Update:</strong> This sample also illustrates how to use the
+<p class="note"><strong>Update:</strong> This sample also illustrates how to use the
 <code><a href="../../../reference/android/media/RemoteControlClient.html">RemoteControlClient</a></code>
 class added in API level 14 to integrate with music playback remote controls
 such as those found on the lockscreen.</p>