update doc

docs/react/getting-started.en-US.md

@@ -11,7 +11,7 @@ Before delving into Ant Design React, a good knowledge of [React](http://faceboo
 
 ## First Example
 
-The following CodePen demo is the simplest usage case, and it's also a good habit to fork this demo to provide a re-producible demo while reporting a bug. Please don't use this demo as a scaffold in real world.
+The following CodePen demo is the simplest usage case, and it's also a good habit to fork this demo to provide a re-producible demo while reporting a bug. Please don't use this demo as a scaffold in production.
 
 - [antd CodePen](http://codepen.io/anon/pen/wGOWGW?editors=001)