update readme

Author: wumpz

README.md

@@ -28,7 +28,7 @@ The generated hierarchy can be navigated using the Visitor Pattern.
 
 ## Extensions Version 0.8.9
 
-* Backported window option to analytic expression.
+* Backported window option from fork to analytic expression.
 * Added **NULLS FIRST** and **NULLS LAST** to order by.
 * Improved parsing of **top**.
 * Improved support for multi part names (SQLServer)