倍速文案修改

lib/video_speed.dart

@@ -34,7 +34,7 @@ class VideoSpeedButtonStyle {
   final String title;
 
   VideoSpeedButtonStyle({
-    this.title = '倍数',
+    this.title = '倍速',
     this.textStyle = const TextStyle(
       fontSize: 11.0,
       fontWeight: FontWeight.normal,