Bug 579019 - fixed javadoc

Change-Id: I0251464a2299140892d87045bbfa0d73f52fae94
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ui/+/192415
Reviewed-by: Matthias Becker <ma.becker@sap.com>
Reviewed-by: Mickael Istria <mistria@redhat.com>
Tested-by: Platform Bot <platform-bot@eclipse.org>
diff --git a/bundles/org.eclipse.jface.notifications/src/org/eclipse/jface/notifications/AbstractNotificationPopup.java b/bundles/org.eclipse.jface.notifications/src/org/eclipse/jface/notifications/AbstractNotificationPopup.java
index 9f0f650..e83858a 100644
--- a/bundles/org.eclipse.jface.notifications/src/org/eclipse/jface/notifications/AbstractNotificationPopup.java
+++ b/bundles/org.eclipse.jface.notifications/src/org/eclipse/jface/notifications/AbstractNotificationPopup.java
@@ -138,7 +138,7 @@
 	 * Clients can override if the window activation shouldn't be added to the popup
 	 * or a different behavior is desired by clicking on the popup.
 	 *
-	 * @param parentShell
+	 * @param parentShell parent shell for this popup
 	 * @return {@code null} if no window activation should be added to the popup
 	 * @since 0.5
 	 */