[gtk+] docs: Annotate gdk_keymap_get_display()

[Emmanuele Bassi <ebassi src gnome org>]

commit b8828023e664dd8094a4e4c43fd329c70821f28d
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Feb 1 16:13:53 2018 +0100

    docs: Annotate gdk_keymap_get_display()
    
    Avoid a warning from the introspection scanner.

 gdk/gdkkeys.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkkeys.c b/gdk/gdkkeys.c
index c3c486f..108e3b6 100644
--- a/gdk/gdkkeys.c
+++ b/gdk/gdkkeys.c
@@ -235,6 +235,14 @@ gdk_keymap_init (GdkKeymap *keymap)
 {
 }
 
+/**
+ * gdk_keymap_get_display:
+ * @keymap: a #GdkKeymap
+ *
+ * Retrieves the #GdkDisplay associated to the @keymap.
+ *
+ * Returns: (transfer none): a #GdkDisplay
+ */
 GdkDisplay *
 gdk_keymap_get_display (GdkKeymap *keymap)
 {