Fixed JSHint error 'Strings must use singlequote'

browser-tests/test.js

@@ -70,7 +70,7 @@ module.exports.todoMVCTest = function (frameworkName, baseUrl, speedMode, laxMod
 
 		test.describe('When page is initially opened', function () {
 			test.it('should focus on the todo input field', function () {
-				testOps.assertFocussedElementId("new-todo");
+				testOps.assertFocussedElementId('new-todo');
 			});
 		});