[gtk] Add GtkTreeListRow type to the docs

[Matthias Clasen <matthiasc src gnome org>]

commit 9f6d12551f5ee57232ab306eaa510a07e302580c
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 8 17:58:09 2019 -0500

    Add GtkTreeListRow type to the docs

 docs/reference/gtk/gtk4.types.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/docs/reference/gtk/gtk4.types.in b/docs/reference/gtk/gtk4.types.in
index b9169c6c77..7db1dbb345 100644
--- a/docs/reference/gtk/gtk4.types.in
+++ b/docs/reference/gtk/gtk4.types.in
@@ -205,6 +205,7 @@ gtk_tool_item_get_type
 gtk_tree_drag_dest_get_type
 gtk_tree_drag_source_get_type
 gtk_tree_list_model_get_type
+gtk_tree_list_row_get_type
 gtk_tree_model_filter_get_type
 gtk_tree_model_get_type
 gtk_tree_model_sort_get_type