docs: fix docs for ActionBar

diff --git a/gtk/gtkactionbar.h b/gtk/gtkactionbar.h
index 6efbb7792825188538f6310441cf155a1885d08d..c338a45176a0c0166db359f67261722495632e00 100644 (file)
--- a/gtk/gtkactionbar.h
+++ b/gtk/gtkactionbar.h
@@ -41,11 +41,13 @@ typedef struct _GtkActionBarClass         GtkActionBarClass;
 
 struct _GtkActionBar
 {
+  /*< private >*/
   GtkContainer container;
 };
 
 struct _GtkActionBarClass
 {
+  /*< private >*/
   GtkContainerClass parent_class;
 
   /* Padding for future expansion */