add tags for wakelock and other API names

Change-Id: Ic9831165d38b3f9642bc14fca2271c8506550ff4
diff --git a/docs/html/training/scheduling/index.jd b/docs/html/training/scheduling/index.jd
index 4d2db60..4239ffb 100644
--- a/docs/html/training/scheduling/index.jd
+++ b/docs/html/training/scheduling/index.jd
@@ -1,5 +1,5 @@
 page.title=Managing Device Awake State
-page.tags=
+page.tags=wakelock, AlarmManager, WakefulBroadcastReceiver
 
 trainingnavtop=true
 startpage=true