[glib/actiongroup-docs] Small doc correction

[Matthias Clasen <matthiasc src gnome org>]

commit 1503cfa36e4823680a0ea9772fb43d017fc39ee3
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Dec 10 15:15:13 2019 -0500

    Small doc correction
    
    Add a transfer annotation to some GActionGroup apis.

 gio/gactiongroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gio/gactiongroup.c b/gio/gactiongroup.c
index 2345ce3b9..24da353b0 100644
--- a/gio/gactiongroup.c
+++ b/gio/gactiongroup.c
@@ -529,7 +529,7 @@ g_action_group_get_action_enabled (GActionGroup *action_group,
  * The return value (if non-%NULL) should be freed with
  * g_variant_unref() when it is no longer required.
  *
- * Returns: (nullable): the current state of the action
+ * Returns: (nullable) (transfer full): the current state of the action
  *
  * Since: 2.28
  **/