Minor changes

doc/d3printing/GSoC/150721_menu/dev.html

@@ -4,7 +4,7 @@
 	<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
 	<script type='text/javascript' src="http://cpettitt.github.io/project/dagre-d3/v0.1.5/dagre-d3.min.js"></script>
 	<script type='text/javascript' src="http://cpettitt.github.io/project/graphlib-dot/v0.4.10/graphlib-dot.min.js"></script>
-	<link rel="stylesheet" href="d3-context-menu.css" />
+	<link rel="stylesheet" href="d3-context-menu.css"/>
 	<script src="d3-context-menu.js"></script>
 </head>