Adjust links for mixed-content issues.

index.html

@@ -6,7 +6,7 @@
     <meta charset="UTF-8" />
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <script src="http://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js"></script>
+    <script src="https://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js"></script>
     <script src="configs.js"></script>
     <script src="main.js"></script>