[rhythmbox] HACKING: Replace non-working git.gnome.org URLs by GNOME Gitlab URLs

[Andre Klapper <aklapper src gnome org>]

commit 04d3894d1ea8ffb4fbe623a33bb73c384e0e1ec2
Author: Andre Klapper <a9016009 gmx de>
Date:   Sat Mar 28 20:00:43 2020 +0100

    HACKING: Replace non-working git.gnome.org URLs by GNOME Gitlab URLs

 HACKING | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/HACKING b/HACKING
index 649b47e85..b19e41675 100644
--- a/HACKING
+++ b/HACKING
@@ -22,11 +22,11 @@ bindings, but these are generally fixed quickly.
 You can find some information on plugin development here: 
 https://wiki.gnome.org/Apps/Rhythmbox/Plugins/WritingGuide
 
-Rhythmbox is developed in GNOME git. You can get a copy of the repository
-by running 'git clone git://git.gnome.org/rhythmbox'.  Any patches you
-send should be in 'git format-patch' or 'git diff' format against current
+Rhythmbox is developed in GNOME git. You can get a copy of the repository by
+running 'git clone https://gitlab.gnome.org/GNOME/rhythmbox.git'.  Any patches
+you send should be in 'git format-patch' or 'git diff' format against current
 git master.  You can also browse the source code and revision history using
-a web browser here: http://git.gnome.org/browse/rhythmbox.
+a web browser here: https://gitlab.gnome.org/GNOME/rhythmbox
 
 Bugs and feature requests are tracked in the GitLab repository
 (https://gitlab.gnome.org/GNOME/rhythmbox/issues).  Patches should be