fix KellyKapowski doc example output

Author: alexsavio

nipype/interfaces/ants/segmentation.py

@@ -1247,14 +1247,11 @@ class KellyKapowski(ANTSCommand):
     >>> kk.inputs.number_integration_points = 10
     >>> kk.inputs.thickness_prior_estimate = 10
     >>> kk.cmdline # doctest: +ALLOW_UNICODE
-    u"KellyKapowski --convergence "[45,0.0,10]" \
---output "[segmentation0_cortical_thickness.nii.gz,segmentation0_warped_white_matter.nii.gz]"  \
---image-dimensionality 3 --gradient-step 0.025000 \
---number-of-integration-points 10 \
---segmentation-image "[segmentation0.nii.gz,2,3]" \
---smoothing-variance 1.000000 \
---smoothing-velocity-field-parameter 1.500000 \
---thickness-prior-estimate 10.000000"
+    u'KellyKapowski --convergence "[45,0.0,10]" \
+--output "[segmentation0_cortical_thickness.nii.gz,segmentation0_warped_white_matter.nii.gz]" \
+--image-dimensionality 3 --gradient-step 0.025000 --number-of-integration-points 10 \
+--segmentation-image "[segmentation0.nii.gz,2,3]" --smoothing-variance 1.000000 \
+--smoothing-velocity-field-parameter 1.500000 --thickness-prior-estimate 10.000000'
 
     """
     _cmd = "KellyKapowski"