update shortcut icon

Author: Bhupesh-V

app/static/app/TDB.png

@@ -23,7 +23,7 @@
     <meta property="twitter:title" content="tutorialdb" />
     <meta property="og:image" content="{% static 'app/tutorialdb.png' %}"/>
     <meta name="twitter:image" content="{% static 'app/tutorialdb.png' %}">
-    <link rel="shortcut icon" type="image/png" href="{% static 'app/tutorialdb.png' %}"/>
+    <link rel="shortcut icon" type="image/png" href="{% static 'app/TDB.png' %}"/>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.7.5/css/bulma.min.css">
     <link rel="stylesheet" type="text/css" href="{% static 'app/css/customCSS.css' %}">
     <link rel="manifest" href="{% static 'app/manifest.json' %}"/>