Update head.html

docs/_includes/head.html

@@ -18,7 +18,7 @@
 		<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.18.1/styles/default.min.css">
 		<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.18.1/highlight.min.js"></script>
 		<script>hljs.initHighlightingOnLoad();</script>
-		
+		 
 		<script>
 			var _hmt = _hmt || [];
 			(function() {