Fix link in release notes.
Fix link in release notes.

Contributed-by: Gintautas Grigelionis
Pull request: https://github.com/apache/ant-ivy/pull/90/

apache/ant-ivy,twogee/ant-ivy,apache/ant-ivy,twogee/ant-ivy,apache/ant-ivy,twogee/ant-ivy,apache/ant-ivy,twogee/ant-ivy