Update index.html

public/index.html

@@ -177,9 +177,13 @@
 		</div>
 		<!-- defining container to keep cesium viewer -->
 
-		<a href="https://www.hft-stuttgart.de/" target='_blank'>
+			<a href="https://ugl.hft-stuttgart.de/" target='_blank'>
         <div class="credit"></div>
         </a>
+		<a href = "mailto: rushikesh.padsala@hft-stuttgart.de" target='_blank'>
+        <div class="credit4"></div>
+        </a>
+
 		
 				<div class="legends" id="food-demand-legend">
 			<div class="food-demand-legend-container">