Fix sandbox link (whoops).
@@ -65,4 +65,4 @@ Lily is a very young language and the community is still growing.
* [Reference](https://Fascinatedbox.github.com/lily/core/module.core.html)
-* [Try it in your browser](https://FascinatedBox.github.com/lily-site/sandbox.html)
+* [Try it in your browser](http://fascinatedbox.github.io/lily/intro-sandbox.html)
