Update changelog.html

changelog.html

@@ -64,7 +64,8 @@ Upcoming changes</a>
   <li class="major rfe">
     Support displaying of warnings from the Update Site in the Plugin Manager
     and in administrative monitors.
-    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-40494">issue 40404</a>)
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-40494">issue 40404</a>,
+    <a href="/blog/2017/01/10/security-warnings/">announcement blog post</a>)
   <li class=rfe>
     Do not print warnings about undefined parameters
     when <code>hudson.model.ParametersAction.keepUndefinedParameters</code> property is set to <code>false</code>.