Fix MediaStyle docs mentioning 2 max actions in compact view

Bug: 18729304
Change-Id: Ica6b8ac47d7d38b1de62d64830256f66cbbdb225
diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index 9e8a793..3d7bacb 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -4098,7 +4098,7 @@
      *
      * Unlike the other styles provided here, MediaStyle can also modify the standard-size
      * {@link Notification#contentView}; by providing action indices to
-     * {@link #setShowActionsInCompactView(int...)} you can promote up to 2 actions to be displayed
+     * {@link #setShowActionsInCompactView(int...)} you can promote up to 3 actions to be displayed
      * in the standard view alongside the usual content.
      *
      * Notifications created with MediaStyle will have their category set to