Update niworkflows/interfaces/nibabel.py

Co-Authored-By: Oscar Esteban <[email protected]>

Author: dPys

niworkflows/interfaces/nibabel.py

@@ -125,7 +125,7 @@ def _run_interface(self, runtime):
 
 class _MergeSeriesInputSpec(BaseInterfaceInputSpec):
     in_files = InputMultiObject(File(exists=True, mandatory=True,
-                                   desc='input list of 3d images'))
+                                     desc='input list of 3d images'))
 
 
 class _MergeSeriesOutputSpec(TraitedSpec):