docs($resource): fix the example

src/ngResource/resource.js

@@ -100,23 +100,23 @@
       });
 
      // We can retrieve a collection from the server
-     var cards = CreditCard.query();
-     // GET: /user/123/card
-     // server returns: [ {id:456, number:'1234', name:'Smith'} ];
-
-     var card = cards[0];
-     // each item is an instance of CreditCard
-     expect(card instanceof CreditCard).toEqual(true);
-     card.name = "J. Smith";
-     // non GET methods are mapped onto the instances
-     card.$save();
-     // POST: /user/123/card/456 {id:456, number:'1234', name:'J. Smith'}
-     // server returns: {id:456, number:'1234', name: 'J. Smith'};
-
-     // our custom method is mapped as well.
-     card.$charge({amount:9.99});
-     // POST: /user/123/card/456?amount=9.99&charge=true {id:456, number:'1234', name:'J. Smith'}
-     // server returns: {id:456, number:'1234', name: 'J. Smith'};
+     var cards = CreditCard.query(function() {
+       // GET: /user/123/card
+       // server returns: [ {id:456, number:'1234', name:'Smith'} ];
+
+       var card = cards[0];
+       // each item is an instance of CreditCard
+       expect(card instanceof CreditCard).toEqual(true);
+       card.name = "J. Smith";
+       // non GET methods are mapped onto the instances
+       card.$save();
+       // POST: /user/123/card/456 {id:456, number:'1234', name:'J. Smith'}
+       // server returns: {id:456, number:'1234', name: 'J. Smith'};
+
+       // our custom method is mapped as well.
+       card.$charge({amount:9.99});
+       // POST: /user/123/card/456?amount=9.99&charge=true {id:456, number:'1234', name:'J. Smith'}
+     });
 
      // we can create an instance as well
      var newCard = new CreditCard({number:'0123'});