fix(README.md): docs defaultsFilter

Author: a8m

README.md

@@ -450,7 +450,7 @@ $scope.fallback = {
   };
 ```
 ```html
-<li ng-repeat="order in orders | defaults: defaultValue">
+<li ng-repeat="order in orders | defaults: fallback">
     <b>id:</b> {{ order.id }},
     <b>name:</b> {{ order.name }}, 
     <b>shipping address:</b> {{ order.destination.zip }}
@@ -469,6 +469,11 @@ And it will cause adverse memory and performance implications.<br/>
 //We copy it once, and it's really cheaper
 $scope.ordersWithFallback = angular.copy($scope.orders);
 ```
+```html
+<li ng-repeat="order in ordersWithFallback | defaults: fallback">
+    <!-- ..... -->
+</li>
+```
 ###where
 comparison for each element in a collection to the given properties object,<br/>
 returning an array of all elements that have equivalent property values.