[evolution] Fix broken Help menu entry in Task Editor after Mallard transition.

[Andre Klapper <aklapper src gnome org>]

commit b165cc575b3dfb6c8e07fca101838e687c4f609f
Author: Andre Klapper <ak-47 gmx net>
Date:   Wed Feb 15 13:11:52 2012 +0100

    Fix broken Help menu entry in Task Editor after Mallard transition.

 calendar/gui/dialogs/task-editor.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/calendar/gui/dialogs/task-editor.c b/calendar/gui/dialogs/task-editor.c
index 1942224..e1d90f4 100644
--- a/calendar/gui/dialogs/task-editor.c
+++ b/calendar/gui/dialogs/task-editor.c
@@ -288,7 +288,7 @@ task_editor_class_init (TaskEditorClass *class)
 	object_class->constructed = task_editor_constructed;
 
 	editor_class = COMP_EDITOR_CLASS (class);
-	editor_class->help_section = "usage-calendar-todo";
+	editor_class->help_section = "tasks-usage";
 	editor_class->edit_comp = task_editor_edit_comp;
 	editor_class->send_comp = task_editor_send_comp;
 	editor_class->show_categories = task_editor_show_categories;