Update index.html

docs/index.html

@@ -25,7 +25,6 @@
         },
     }
   </script>
-  <script src="//unpkg.com/docsify"></script>
   <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
   <script src="//unpkg.com/docsify/lib/plugins/search.js"></script>
   <script src="//unpkg.com/docsify/lib/plugins/zoom-image.js"></script>