[gtk/ebassi/docs-for-master: 19/20] doc: Document missing GtkNotebook types

[Emmanuele Bassi <ebassi src gnome org>]

commit b2dd9eabb53d8248c9ec98e9a55547d5dd81d454
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Dec 16 16:04:29 2020 +0000

    doc: Document missing GtkNotebook types

 gtk/gtknotebook.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/gtk/gtknotebook.h b/gtk/gtknotebook.h
index d02e384e74..d219f78c42 100644
--- a/gtk/gtknotebook.h
+++ b/gtk/gtknotebook.h
@@ -44,8 +44,22 @@ G_BEGIN_DECLS
 #define GTK_NOTEBOOK_PAGE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_NOTEBOOK_PAGE, GtkNotebookPage))
 #define GTK_IS_NOTEBOOK_PAGE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_NOTEBOOK_PAGE))
 
+/**
+ * GtkNotebookPage:
+ *
+ * A page in the #GtkNotebook.
+ *
+ * The `GtkNotebookPage` structure only contains private data.
+ */
 typedef struct _GtkNotebookPage GtkNotebookPage;
 
+/**
+ * GtkNotebookTab:
+ * @GTK_NOTEBOOK_TAB_FIRST: the first tab in the notebook
+ * @GTK_NOTEBOOK_TAB_LAST: the last tab in the notebook
+ *
+ * The parameter used in the action signals of #GtkNotebook.
+ */
 typedef enum
 {
   GTK_NOTEBOOK_TAB_FIRST,