[gnome-todo] task-list: Fix property docs

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8af61ded6abf1e3e679292e1d8ff236657843477
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Feb 4 22:37:28 2018 -0200

    task-list: Fix property docs

 src/gtd-task-list.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gtd-task-list.c b/src/gtd-task-list.c
index 879b7a6..a595a01 100644
--- a/src/gtd-task-list.c
+++ b/src/gtd-task-list.c
@@ -211,9 +211,9 @@ gtd_task_list_class_init (GtdTaskListClass *klass)
                              G_PARAM_READWRITE));
 
   /**
-   * GtdTaskList::source:
+   * GtdTaskList::provider:
    *
-   * The parent source of the list.
+   * The data provider of the list.
    */
   g_object_class_install_property (
         object_class,