Fix typo in styled player control view javadoc

#minor-release

PiperOrigin-RevId: 363915106

library/ui/src/main/java/com/google/android/exoplayer2/ui/StyledPlayerControlView.java

@@ -141,7 +141,7 @@ import java.util.concurrent.CopyOnWriteArrayList;
  *         <li>Corresponding method: {@link #setShowShuffleButton(boolean)}
  *         <li>Corresponding method: {@link #setShowShuffleButton(boolean)}
  *         <li>Default: false
  *         <li>Default: false
  *       </ul>
  *       </ul>
- *   <li><b>{@code show_subtitle_button}</b> - Whether the shuffle button is shown.
+ *   <li><b>{@code show_subtitle_button}</b> - Whether the subtitle button is shown.
  *       <ul>
  *       <ul>
  *         <li>Corresponding method: {@link #setShowSubtitleButton(boolean)}
  *         <li>Corresponding method: {@link #setShowSubtitleButton(boolean)}
  *         <li>Default: false
  *         <li>Default: false