Fix Javadoc typo.

Issue: #1235
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117131149

library/src/main/java/com/google/android/exoplayer/ExoPlayer.java

@@ -215,7 +215,7 @@ public interface ExoPlayer {
   static final int STATE_BUFFERING = 3;
   static final int STATE_BUFFERING = 3;
   /**
   /**
    * The player is prepared and able to immediately play from the current position. The player will
    * The player is prepared and able to immediately play from the current position. The player will
-   * be playing if {@link #setPlayWhenReady(boolean)} returns true, and paused otherwise.
+   * be playing if {@link #getPlayWhenReady()} returns true, and paused otherwise.
    */
    */
   static final int STATE_READY = 4;
   static final int STATE_READY = 4;
   /**
   /**