[gtk/ebassi/gidocgen: 270/478] pagesetupdialog: Add an example image

[Emmanuele Bassi <ebassi src gnome org>]

commit 35217175fa9341c789940e432695ca913e7ffa96
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Feb 27 18:21:52 2021 -0500

    pagesetupdialog: Add an example image

 gtk/gtkpagesetupunixdialog.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/gtkpagesetupunixdialog.c b/gtk/gtkpagesetupunixdialog.c
index 2064b65acc..be41499886 100644
--- a/gtk/gtkpagesetupunixdialog.c
+++ b/gtk/gtkpagesetupunixdialog.c
@@ -45,6 +45,8 @@
  * `GtkPageSetupUnixDialog` implements a page setup dialog for platforms
  * which don’t provide a native page setup dialog, like Unix.
  *
+ * ![An example GtkPageSetupUnixDialog](pagesetupdialog.png)
+ *
  * It can be used very much like any other GTK dialog, at the
  * cost of the portability offered by the high-level printing
  * API in [class@Gtk.PrintOperation].