[seahorse] Add hyperlink for COPYING in README.mdfile

[Niels De Graef <nielsdg src gnome org>]

commit bfa9d56ab28e8a01b0ea21684ef774c02a958e80
Author: Kshithij Iyer <kshithij ki gmail com>
Date:   Fri Feb 21 15:20:57 2020 +0000

    Add hyperlink for COPYING in README.mdfile

 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 48615818..73df5367 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ To discuss issues with developers and other users, you can subscribe to the
 [mailing list] or join [#seahorse] on irc.gnome.org.
 
 ## License
-Seahorse is released under the GPL. See COPYING for more info.
+Seahorse is released under the GPL. See [COPYING] for more info.
 
 
 [GNOME]: https://www.gnome.org
@@ -49,3 +49,4 @@ Seahorse is released under the GPL. See COPYING for more info.
 [translation project wiki page]: https://wiki.gnome.org/TranslationProject/
 [mailing list]: https://mail.gnome.org/mailman/listinfo/seahorse-list
 [#seahorse]: irc://irc.gnome.org/seahorse
+[COPYING]: https://gitlab.gnome.org/GNOME/seahorse/COPYING