Update index.html

Author: Pro-Bandey

Reader/index.html

@@ -13,7 +13,7 @@
   <link rel="stylesheet" href="reader.css">
   <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
   <!-- Fonts -->
-  <link href="src/CoreSans-Regular_en.otf" rel="stylesheet">
+  <link href="https://mainroute-core.github.io/src/CoreSans-Regular_en.otf" rel="stylesheet">
 
 
 </head>