updated link

dist/index.html

@@ -26,7 +26,7 @@
   <script type="text/javascript">
     $(function () {
       window.swaggerUi = new SwaggerUi({
-      url: "http://petstore.swagger.wordnik.com/api/api-docs",
+      url: "http://petstore.swagger.wordnik.com/v2/swagger.json",
       dom_id: "swagger-ui-container",
       supportedSubmitMethods: ['get', 'post', 'put', 'delete'],
       onComplete: function(swaggerApi, swaggerUi){

src/main/html/index.html

@@ -26,7 +26,7 @@
   <script type="text/javascript">
     $(function () {
       window.swaggerUi = new SwaggerUi({
-      url: "http://petstore.swagger.wordnik.com/api/api-docs",
+      url: "http://petstore.swagger.wordnik.com/v2/swagger.json",
       dom_id: "swagger-ui-container",
       supportedSubmitMethods: ['get', 'post', 'put', 'delete'],
       onComplete: function(swaggerApi, swaggerUi){