Update index.html

Author: yogananda-muthaiah

templates/index.html

@@ -11,7 +11,7 @@
 
 		<script id='sap-ui-bootstrap'
 				src='https://ui5.sap.com/resources/sap-ui-core.js'
-				data-sap-ui-theme='sap_fiori_3'
+				data-sap-ui-theme='sap_horizon'
 				data-sap-ui-libs='sap.m,sap.f,sap.viz,sap.ui.integration'
 				data-sap-ui-xx-bindingSyntax='complex'>
 		</script>