[glib/wip/otte/interface-types: 448/448] Add a cross-ref to the docs

[Matthias Clasen <matthiasc src gnome org>]

commit f74eaa31f107b9a2a53ac15ddfc7996e735be4e8
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Oct 22 17:59:15 2020 -0400

    Add a cross-ref to the docs
    
    Add a link to the place where prerequisites are
    explained.

 gobject/gtype.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/gobject/gtype.c b/gobject/gtype.c
index 2d4862386..e6e7e7165 100644
--- a/gobject/gtype.c
+++ b/gobject/gtype.c
@@ -1694,13 +1694,15 @@ g_type_interface_prerequisites (GType  interface_type,
  * @interface_type: an interface type
  *
  * Returns the instantiable prerequisite of an interface type.
- *
  * If the interface type has no instantiable prerequisite,
  * %G_TYPE_INVALID is returned.
  *
- * Since: 2.68
+ * See g_type_interface_add_prerequisite() for more information
+ * about prerequisites.
  *
  * Returns: the instantiable prerequisite type or %G_TYPE_INVALID if none
+ *
+ * Since: 2.68
  **/
 GType
 g_type_interface_instantiable_prerequisite (GType interface_type)