Fix typo in javadoc of playFromMediaId

Test: N/A
Change-Id: I88cf97e408d279daf19725e4542f724cd44bf058

diff --git a/media/media/src/main/java/android/support/v4/media/session/MediaControllerCompat.java b/media/media/src/main/java/android/support/v4/media/session/MediaControllerCompat.java
index 34f32cc..91660a3 100644
--- a/media/media/src/main/java/android/support/v4/media/session/MediaControllerCompat.java
+++ b/media/media/src/main/java/android/support/v4/media/session/MediaControllerCompat.java

@@ -1197,9 +1197,9 @@
         public abstract void play();
 
         /**
-         * Request that the player start playback for a specific {@link Uri}.
+         * Request that the player start playback for a specific media id.
          *
-         * @param mediaId The uri of the requested media.
+         * @param mediaId The id of the requested media.
          * @param extras Optional extras that can include extra information
          *            about the media item to be played.
          */