Revert argstr to use %d

Author: lucindasisk

nipype/interfaces/mrtrix3/reconst.py

@@ -119,10 +119,9 @@ class EstimateFODInputSpec(MRTrix3BaseInputSpec):
         traits.Int,
         value=[8],
         usedefault=True,
-        argstr='-lmax %s',
+        argstr='-lmax %d',
         sep=',',
-        desc=('maximum harmonic degree of response function - single value for '
-              'single-shell response, list for multi-shell response'))
+        desc=('maximum harmonic degree of response function - single value for single-shell response, list for multi-shell response'))
     in_dirs = File(
         exists=True,
         argstr='-directions %s',