Fixed a typo

examples/js/renderers/RaytracingRenderer.js

@@ -1,6 +1,6 @@
 /**
  * RaytracingRenderer renders by raytracing it's scene. However, it does not
- * compute the pixels itself but it hands off and coordinates the taks for workers.
+ * compute the pixels itself but it hands off and coordinates the tasks for workers.
  * The workers compute the pixel values and this renderer simply paints it to the Canvas.
  *
  * @author zz85 / http://github.com/zz85