small pep8 changes

Author: djarecka

nipype/interfaces/ants/registration.py

@@ -1031,6 +1031,7 @@ def _format_winsorize_image_intensities(self):
         self._quantilesDone = True
         return '--winsorize-image-intensities [ %s, %s ]' % (self.inputs.winsorize_lower_quantile,
                                                              self.inputs.winsorize_upper_quantile)
+
     def _get_initial_transform_filenames(self):
         n_transforms = len(self.inputs.initial_moving_transform)
 
@@ -1428,4 +1429,3 @@ def _list_outputs(self):
             outputs['inverse_warp_field'] = os.path.abspath(
                 self.inputs.output_prefix + '1InverseWarp.nii.gz')
         return outputs
-