Update URL to Mozilla's release schedule.

wiki/src/contribute/working_together/roles/release_manager.mdwn

@@ -11,7 +11,7 @@ This includes for example failure notifications for Jenkins jobs.
 
 - Check the Mozilla release calendars:
   * [Google calendar](https://www.google.com/calendar/embed?src=mozilla.com_2d37383433353432352d3939%40resource.calendar.google.com)
-  * [Release schedule](https://wiki.mozilla.org/RapidRelease/Calendar)
+  * [Release schedule](https://wiki.mozilla.org/Release_Management/Calendar)
 - Send the release schedule to <tails-dev@boum.org> and
   <tails-l10n@boum.org>.
   - Ask the core team and contributors for availability at the