[retro-gtk] readme: Update the Libretro core descriptor URL

[Adrien Plazas <aplazas src gnome org>]

commit ee5bf76a2fa678576adff608114cc7f0c616001a
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sat Nov 14 19:35:33 2020 +0100

    readme: Update the Libretro core descriptor URL

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 872199b4..4e315edc 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ retro-gtk is a framework easing the usage of Libretro cores in conjunction with
 It encourages the cores to be installed in a well defined centralized place —
 namely the `libretro` subdirectory of your `lib` directory — and it recommends
 them to come with [Libretro core descriptors]
-(https://wiki.gnome.org/Apps/Games/Documentation/LibretroDescriptorSpec).
+(https://gnome.pages.gitlab.gnome.org/retro-gtk/doc/master/libretro-core-descriptor.html).
 
 ## Example