Update index.html

public/index.html

@@ -69,9 +69,13 @@
 		<div id="chartcontainer" style="visibility: hidden;"> <div class='legend-title'>Select a Building</div><button type="button" class="cesium-infoBox-close" onclick="closeChart()">×</button>
 				<div id="chart"></div>
         </div>
-		<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>
+