Merge pull request #399 from alexlehm/master

changed text once more to mention https

core/src/main/java/jenkins/model/Jenkins.java

@@ -1768,9 +1768,9 @@ public class Jenkins extends AbstractCIBase implements ModifiableItemGroup<TopLe
      * is that unless you are processing a request, this method doesn't work.
      *
      * Please note that this will not work in all cases if Jenkins is running behind a
-     * reverse proxy (namely when user has switched off ProxyPreserveHost, which is
-     * default setup) and you should use getRootUrl if you want to be sure you reflect
-     * user setup.
+     * reverse proxy (e.g. when user has switched off ProxyPreserveHost, which is
+     * default setup or the actual url uses https) and you should use getRootUrl if
+     * you want to be sure you reflect user setup.
      * See https://wiki.jenkins-ci.org/display/JENKINS/Running+Jenkins+behind+Apache
      *
      * @since 1.263