Merge pull request #1918 from abarth/improve_createState_docs

Improve the sample code for createState
diff --git a/packages/flutter/lib/src/widgets/framework.dart b/packages/flutter/lib/src/widgets/framework.dart
index 53e47e4..0311acf 100644
--- a/packages/flutter/lib/src/widgets/framework.dart
+++ b/packages/flutter/lib/src/widgets/framework.dart
@@ -274,7 +274,7 @@
   /// override this to return a new instance of the State class associated with
   /// this StatefulComponent class, like this:
   ///
-  ///   MyState createState() => new MyState(this);
+  ///   _MyState createState() => new _MyState();
   State createState();
 }