Polishes announcement about Struts 2.5.25
diff --git a/_config.yml b/_config.yml
index 7060655..21c951e 100644
--- a/_config.yml
+++ b/_config.yml
@@ -33,3 +33,6 @@
 
 # Archive site with all the versions
 archive_url: https://archive.apache.org/dist/struts/
+
+# JIRA issue tracking
+jira_url: https://issues.apache.org/jira/projects/WW/
diff --git a/source/announce.md b/source/announce.md
index 94f2988..ee8f497 100644
--- a/source/announce.md
+++ b/source/announce.md
@@ -34,13 +34,16 @@
  - Update multiple Struts 2.5.x libraries / Maven build plugin versions
  - Upgrade OSGi to the latest version
  
+> Please read the [Version Notes]({{ site.wiki_url }}/Version+Notes+2.5.25) to find more details about performed 
+> bug fixes and improvements.
+ 
 **All developers are strongly advised to perform this action.**
 
 The 2.5.x series of the Apache Struts framework has a minimum requirement of the following specification versions:
 Servlet API 2.4, JSP API 2.0, and Java 7.
 
-Should any issues arise with your use of any version of the Struts framework, please post your comments
-to the user list, and, if appropriate, file a tracking ticket.
+Should any issues arise with your use of any version of the Struts framework, please post your comments to the user list, 
+and, if appropriate, file [a tracking ticket]({{ site.jira_url }}).
 
 You can download this version from our [download](download.cgi#struts-ga) page.