Selectmenu: Added missing semicolon

Closes jquerygh-1689

Author: agcolom

demos/selectmenu/custom_render.html

@@ -44,7 +44,7 @@
 	</script>
 	<style>
 		h2 {
-			margin: 30px 0 0 0
+			margin: 30px 0 0 0;
 		}
 		fieldset {
 			border: 0;