Widget demo: Fixed typo.

demos/widget/default.html

@@ -165,7 +165,7 @@
 	<div id="my-widget1">color me</div>
 	<div id="my-widget2">color me</div>
 	<div id="my-widget3">color me</div>
-	<button id="disable">Toglge disabled option</button>
+	<button id="disable">Toggle disabled option</button>
 	<button id="black">Go black</button>
 </div>