[gimp] app: rename argument in gimpprefsbox.h too

[Michael Natterer <mitch src gnome org>]

commit 0d74264c4d650f9cb05c06ef726e712bbd94a7cd
Author: Michael Natterer <mitch gimp org>
Date:   Wed May 9 13:54:16 2018 +0200

    app: rename argument in gimpprefsbox.h too

 app/widgets/gimpprefsbox.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/widgets/gimpprefsbox.h b/app/widgets/gimpprefsbox.h
index 144ea7e..0982c6a 100644
--- a/app/widgets/gimpprefsbox.h
+++ b/app/widgets/gimpprefsbox.h
@@ -52,7 +52,7 @@ GtkWidget   * gimp_prefs_box_new                   (void);
 
 GtkWidget   * gimp_prefs_box_add_page              (GimpPrefsBox *box,
                                                     const gchar  *icon_name,
-                                                    const gchar  *notebook_label,
+                                                    const gchar  *page_title,
                                                     const gchar  *tree_label,
                                                     const gchar  *help_id,
                                                     GtkTreeIter  *parent,