Change the initial wording of the sort-direction button

Keep it lowercased as that's what it actually toggles between when
clicked

src/Umbraco.Web.UI.Client/src/views/common/dialogs/template/querybuilder.controller.js

@@ -33,7 +33,7 @@ angular.module("umbraco").controller('Umbraco.Dialogs.Template.QueryBuilderContr
 						alias: "",
 						name: "",
 					},
-					direction: "Ascending"
+					direction: "ascending"
 				}
 			};