Fix AudioSink reset javadoc.

PiperOrigin-RevId: 395444714

library/core/src/main/java/com/google/android/exoplayer2/audio/AudioSink.java

@@ -446,6 +446,6 @@ public interface AudioSink {
    */
    */
   void experimentalFlushWithoutAudioTrackRelease();
   void experimentalFlushWithoutAudioTrackRelease();
 
 
-  /** Resets the renderer, releasing any resources that it currently holds. */
+  /** Resets the sink, releasing any resources that it currently holds. */
   void reset();
   void reset();
 }
 }