[tasque] Fix typo

[Antonius Riha <antoniusri src gnome org>]

commit df01f886cf30adc79bf286146bba8054f617c81f
Author: Antonius Riha <antoniusriha gmail com>
Date:   Sat Jan 19 21:22:02 2013 +0100

    Fix typo

 src/Gtk.Tasque/TreeModelListAdapter.cs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Gtk.Tasque/TreeModelListAdapter.cs b/src/Gtk.Tasque/TreeModelListAdapter.cs
index 6a44756..7f8e833 100644
--- a/src/Gtk.Tasque/TreeModelListAdapter.cs
+++ b/src/Gtk.Tasque/TreeModelListAdapter.cs
@@ -41,7 +41,7 @@ namespace Gtk.Tasque
 				throw new ArgumentNullException ("source");
 			var observableSource = source as INotifyCollectionChanged;
 			if (observableSource == null)
-				throw new ArgumentException ("source must be InotifyCollectionChanged");
+				throw new ArgumentException ("source must be INotifyCollectionChanged");
 			this.source = source;
 			observableSource.CollectionChanged += HandleCollectionChanged;