[gtk+/composite-templates] Fix doc comment

[Juan Pablo Ugarte <jpu src gnome org>]

commit 516fbd5a2737356de3bb1635e97219467cc4b977
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Sep 13 00:10:50 2012 -0400

    Fix doc comment
    
    The setting was only introduced in 3.6.

 gtk/gtksettings.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtksettings.c b/gtk/gtksettings.c
index cac82bd..bfcd8c9 100644
--- a/gtk/gtksettings.c
+++ b/gtk/gtksettings.c
@@ -1146,12 +1146,12 @@ gtk_settings_class_init (GtkSettingsClass *class)
   g_assert (result == PROP_AUTO_MNEMONICS);
 
   /**
-   * GtkSettings:gtk-primary-button-warps-slider
+   * GtkSettings:gtk-primary-button-warps-slider:
    *
    * Whether a click in a #GtkRange trough should scroll to the click position or
    * scroll by a single page in the respective direction.
    *
-   * Since: 2.24
+   * Since: 3.6
    */
   result = settings_install_property_parser (class,
                                              g_param_spec_boolean ("gtk-primary-button-warps-slider",