Update out of date hyperlinks
Change-Id: Ie800b970cd3bf5824ff7504372f79896179e4134
diff --git a/Documentation/prolog-cookbook.txt b/Documentation/prolog-cookbook.txt
index b15c283..b53da4b 100644
--- a/Documentation/prolog-cookbook.txt
+++ b/Documentation/prolog-cookbook.txt
@@ -56,7 +56,7 @@
examples.
== Prolog in Gerrit
-Gerrit uses its own link:https://code.google.com/p/prolog-cafe/[fork] of the
+Gerrit uses its own link:https://gerrit.googlesource.com/prolog-cafe/[fork] of the
original link:http://kaminari.istc.kobe-u.ac.jp/PrologCafe/[prolog-cafe]
project. Gerrit embeds the prolog-cafe library and can interpret Prolog programs
at runtime.