Merge pull request angular-ui#444 from qgerome/master

Fix small typo

Author: nateabele

sample/states.js

@@ -56,7 +56,7 @@ angular.module('uiRouterSample')
           .state('contacts', {
 
             // With abstract set to true, that means this state can not be explicitly activated.
-            // It can only be implicitly activated by activating one if it's children.
+            // It can only be implicitly activated by activating one of it's children.
             abstract: true,
 
             // This abstract state will prepend '/contacts' onto the urls of all its children.
@@ -267,4 +267,4 @@ angular.module('uiRouterSample')
                 }, 100);
               }]
           })
-      }]);
+      }]);