[glib] GListModel docs: It's get_n_items(), not get_length().

[Murray Cumming <murrayc src gnome org>]

commit 846e206146c2f0b6b5321d245004d262c7d585a3
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Sep 16 14:30:29 2015 +0200

    GListModel docs: It's get_n_items(), not get_length().

 gio/glistmodel.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/glistmodel.c b/gio/glistmodel.c
index 5737449..e68ef02 100644
--- a/gio/glistmodel.c
+++ b/gio/glistmodel.c
@@ -61,7 +61,7 @@ G_DEFINE_INTERFACE (GListModel, g_list_model, G_TYPE_OBJECT);
  * interface, in which case all objects in the list must implement it.
  *
  * The semantics are close to that of an array:
- * g_list_model_get_length() returns the number of items in the list and
+ * g_list_model_get_n_items() returns the number of items in the list and
  * g_list_model_get_item() returns an item at a (0-based) position. In
  * order to allow implementations to calculate the list length lazily,
  * you can also iterate over items: starting from 0, repeatedly call