public: index: fix show favicon in all pages

#36

Author: BibianaC

public/index.html

@@ -7,7 +7,7 @@
     <meta property="og:title" content="360Giving Quality Dashboard">
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta name="theme-color" content="#ffffff">
-    <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
+    <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />
     <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i&display=swap" type="text/css" />
     <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons" type="text/css" />
     <noscript>