mute video for autoplay (zh-hans)

Author: micuat

src/data/examples/zh-Hans/20_3D/04_textures.js

@@ -12,6 +12,7 @@ function setup(){
 
   img = loadImage("assets/cat.jpg");
   vid = createVideo(["assets/360video_256crop_v2.mp4"]);
+  vid.elt.muted = true;
   vid.loop();
   vid.hide();
 }
@@ -36,4 +37,4 @@ function draw(){
     box(100, 100, 100);
   pop();
   theta += 0.05;
-}
+}