[ts][player] Small fix in physics example

spine-ts/spine-player/example/physics.html

@@ -17,7 +17,7 @@
       last = new spine.Vector3();
     new spine.SpinePlayer("player", {
       skeleton: "assets/celestial-circus-pro.skel",
-      url: "assets/celestial-circus-pma.atlas",
+      atlas: "assets/celestial-circus-pma.atlas",
       showControls: true,
       animation: "swing",
       success: (player) => {