Fix one more service example

api/examples/service-list.json

@@ -6,6 +6,9 @@
             "labels": {
                 "name": "nginx"
             }
+            "selector": {
+                "name": "nginx"
+            }
         },
         {
             "id": "example2",
@@ -14,6 +17,10 @@
                 "env": "prod",
                 "name": "jetty"
             }
+            "selector": {
+                "env": "prod",
+                "name": "jetty"
+            }
         }
     ]
 }