Update v2.0.0.md

Author: ryanflorence

upgrade-guides/v2.0.0.md

@@ -12,7 +12,7 @@
 
 For more information see [https://github.com/rackt/react-router/issues/2646]
 
-For a lot of apps this upgrade will be API churn. Underneath the hood there are significant differences that make integrating with the rest of the React ecosystem more straightforward. It's hard to imagine the top-level API changing much after this. But if it does, rest assured we are committed to ...
+For a lot of apps this upgrade might look like API churn. Underneath the hood there are significant differences that make integrating with the rest of the React ecosystem more straightforward. It's hard to imagine the top-level API changing much after this. But if it does, rest assured we are committed to ...
 
 ### Backwards Compatibility and Deprecation Warnings