Merge branch 'ken2' into 'main'

feat: example images are changed

See merge request !5

assets/js/bl_tova.js

@@ -302,7 +302,7 @@ const   tova_down = `
 
 var preload = { // preload the images
     type: jsPsychPreload,
-    images: [root_path + 'assets/img/shape.png', // path from root
+    images: [ // path from root
         root_path + 'assets/img/tova_up.png',
         root_path + 'assets/img/tova_down.png']
 };