Merge pull request #3197 from skv-headless/fix-link-to-animations

[Docs] fix link to animation examples

docs/Animations.md

@@ -242,7 +242,7 @@ vertical panning.
 
 The above API gives a powerful tool for expressing all sorts of animations in a
 concise, robust, and performant way.  Check out more example code in
-[UIExplorer/AnimationExample](https://github.com/facebook/react-native/blob/master/Examples/UIExplorer/AnimationExample).  Of course there may still be times where `Animated`
+[UIExplorer/AnimationExample](https://github.com/facebook/react-native/tree/master/Examples/UIExplorer/AnimatedGratuitousApp).  Of course there may still be times where `Animated`
 doesn't support what you need, and the following sections cover other animation
 systems.