Fixed a small typo in an info message.

d2o/distributor_factory.py

@@ -109,7 +109,7 @@ class _distributor_factory(object):
             if dtype is None:
                 if global_data is None:
                     dtype = np.dtype('float64')
-                    about_infos_cprint('INFO: dtype set was set to default.')
+                    about_infos_cprint('INFO: dtype was set to default.')
                 else:
                     try:
                         dtype = global_data.dtype