Update README.md

Author: Ducasse

README.md

@@ -1,6 +1,6 @@
 # NewPharoByExample90
 A new version of Pharo by example for Pharo. You can find the automatic build at 
-https://github.com/SquareBracketAssociates/NewPharoByExample9/releases/download/latest/PharoByExample9-wip.pdf
+https://github.com/SquareBracketAssociates/NewPharoByExample9/releases/download/latest/PharoByExample9.pdf
 
 Look here for more [Books and Booklets](http://books.pharo.org/).
 The pdf of the current book should be available on the release tab of this page.