[gtk+] documentation: clarify gtk_icon_theme_add_builtin_icon() usage

[Matthias Clasen <matthiasc src gnome org>]

commit 4ce5fcc5c853bea5acc9ddf61b4426781761fbf5
Author: Balint Reczey <balint balintreczey hu>
Date:   Mon Mar 3 16:07:47 2014 +0100

    documentation: clarify gtk_icon_theme_add_builtin_icon() usage
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726135

 gtk/gtkicontheme.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index 9131006..0eb44bd 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -5066,7 +5066,7 @@ gtk_icon_info_get_display_name (GtkIconInfo *icon_info)
 /**
  * gtk_icon_theme_add_builtin_icon:
  * @icon_name: the name of the icon to register
- * @size: the size at which to register the icon (different
+ * @size: the size in pixels at which to register the icon (different
  *        images can be registered for the same icon name
  *        at different sizes.)
  * @pixbuf: #GdkPixbuf that contains the image to use