docs(website): fix docs examples

Author: rogeralbinoi

dist/demo.html

@@ -1,8 +1,10 @@
 <meta charset="utf-8">
 <title>lazyload-vue demo</title>
 <script src="./lazyload-vue.umd.js"></script>
+
 <link rel="stylesheet" href="./lazyload-vue.css">
 
+
 <script>
 console.log(lazyload-vue)
 </script>