typo in changelog

changelog.html

@@ -60,7 +60,7 @@ Upcoming changes</a>
     (Due to JENKINS-20892, even with this fix at most 20 builds are shown.)
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-21159">issue 21159</a>)
   <li class=rfe>
-    Slave started from Java Web Start can now intall itself as a systemd service.
+    Slave started from Java Web Start can now install itself as a systemd service.
   <li class=rfe>
     Split the “raw HTML” markup formatter out of core into a bundled plugin.
 </ul>