[releng] Update source URL

[Michael Catanzaro <mcatanzaro src gnome org>]

commit c8d45cad12d72a49cfd65d832a50fef6b39ca355
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Jul 2 12:47:38 2020 +0000

    Update source URL

 tools/schedule/automail.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tools/schedule/automail.py b/tools/schedule/automail.py
index c67dce7..6977aa6 100755
--- a/tools/schedule/automail.py
+++ b/tools/schedule/automail.py
@@ -20,7 +20,7 @@ For a quick overview of the GNOME schedule, please see:
 Thanks,
 --
 Automatically generated email. Source at:
-https://git.gnome.org/browse/releng/tree/tools/schedule/automail.py""";
+https://gitlab.gnome.org/GNOME/releng/-/blob/master/tools/schedule/automail.py""";
 
 def mail_events(events):
     if not events: return # sanity check