docs(ngRepeat): improve example description

The example seems to also be filtering by age. It threw me off a bit because I was getting results when I entered numbers in the input field.

PR (#15037)

src/ng/directive/ngRepeat.js

@@ -233,7 +233,7 @@
  *
  * @example
  * This example uses `ngRepeat` to display a list of people. A filter is used to restrict the displayed
- * results by name. New (entering) and removed (leaving) items are animated.
+ * results by name or by age. New (entering) and removed (leaving) items are animated.
   <example module="ngRepeat" name="ngRepeat" deps="angular-animate.js" animations="true" name="ng-repeat">
     <file name="index.html">
       <div ng-controller="repeatController">