[JENKINS-25473] Retroactively filing #1439.

changelog.html

@@ -78,7 +78,7 @@ Upcoming changes</a>
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-25358">issue 25358</a>)
   <li class=bug>
     Unnecessarily slow startup time with a massive number of jobs.
-    (<a href="https://github.com/jenkinsci/jenkins/pull/1439">pull request 1439</a>)  
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-25473">issue 25473</a>)
   <li class=bug>
     Custom workspace option did not work under some conditions.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-25221">issue 25221</a>)