[gtk/ebassi/gidocgen: 103/200] docs: Add backend links to the gdk docs

[Emmanuele Bassi <ebassi src gnome org>]

commit d7bb7df5a6ea1d382e2451c6c2a46fb906cae78e
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Feb 21 10:39:26 2021 -0500

    docs: Add backend links to the gdk docs
    
    These are placeholders for when we know how to
    link across namespaces.

 docs/reference/gdk/gdk4.toml.in | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/docs/reference/gdk/gdk4.toml.in b/docs/reference/gdk/gdk4.toml.in
index da74d0cfd0..0f87f0042b 100644
--- a/docs/reference/gdk/gdk4.toml.in
+++ b/docs/reference/gdk/gdk4.toml.in
@@ -7,7 +7,8 @@ authors = "GTK Development Team"
 logo_url = "gtk-logo.svg"
 license = "GPL-2.1-or-later"
 description = "The GTK toolkit"
-dependencies = [ "GObject-2.0", "cairo-1.0", "Pango-1.0" ]
+dependencies = [ "GObject-2.0", "cairo-1.0", "Pango-1.0",
+                 "GdkWayland-4.0",  "GdkX11-4.0" ]
 devhelp = true
 
   [dependencies."GObject-2.0"]
@@ -25,6 +26,16 @@ devhelp = true
   description = "Text shaping and rendering"
   docs_url = "https://developer.gnome.org/pango/stable";
 
+  [dependencies."GdkWayland-4.0"]
+  name = "GdkWayland"
+  description = "GDK Wayland Backend"
+  docs_url = "https://developer.gnome.org/gtk4/stable"; # fixme
+
+  [dependencies."GdkX11-4.0"]
+  name = "GdkX11"
+  description = "GDK X11 Backend"
+  docs_url = "https://developer.gnome.org/gtk4/stable"; # fixme
+
 [theme]
 name = "basic"
 show_index_summary = true