update link to topology post

_posts/2017-04-10-release-0.16.0.md

@@ -31,7 +31,7 @@ This is the change we are most exited about for this release. It brings
 performance enhancements, makes maintaining the code easier, it's easier to
 extend and allowed us a simplification of the interface. We have previously
 written about the details of
-new [topology system]({% post_url 2016-05-16-release-0.15.0 %}).
+new [topology system]({% post_url 2017-04-03-new-topology-system %}).
 
 But with this change also a lot of deprecated functions have been removed. For
 all of the deprecated functions the new replacements already exists and you will