[tasque] Beautify error message in RTM backend

[Antonius Riha <antoniusri src gnome org>]

commit 0aed4012ae59324c87a6e06457a930fd0b7de592
Author: Antonius Riha <antoniusriha gmail com>
Date:   Tue Mar 19 22:53:46 2013 +0100

    Beautify error message in RTM backend

 src/Addins/Backends/Rtm/RtmTaskListRepository.cs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Addins/Backends/Rtm/RtmTaskListRepository.cs 
b/src/Addins/Backends/Rtm/RtmTaskListRepository.cs
index b2da296..288ca48 100644
--- a/src/Addins/Backends/Rtm/RtmTaskListRepository.cs
+++ b/src/Addins/Backends/Rtm/RtmTaskListRepository.cs
@@ -109,7 +109,7 @@ namespace Tasque.Backends.Rtm
                                                      ITaskCore item)
                {
                        throw new NotSupportedException (
-                               "A task can only have one task list.");
+                               "A task can only belong to one task list.");
                }
 
                void ITaskListTaskCollectionRepo.AddNew (ITaskListCore container,