remove unnecessary script end tag

Author: Rokt33r

lib/main.html

@@ -9,7 +9,6 @@
   <link rel="stylesheet" href="../node_modules/highlight.js/styles/xcode.css" id="hljs-css">
   <link rel="shortcut icon" href="../resources/favicon.ico">
   <title>Boostnote</title>
-</script>
 
   <style>
   @font-face {