[skip ds210][skip ds005][skip ds054][skip tests] fix docs

Author: oesteban

docs/workflows.rst

@@ -30,6 +30,7 @@ is presented below:
                                 output_dir='.',
                                 bids_dir='.',
                                 skull_strip_template='OASIS',
+                                skull_strip_fixed_seed=False,
                                 template='MNI152NLin2009cAsym',
                                 output_spaces=['T1w', 'fsnative',
                                               'template', 'fsaverage5'],
@@ -68,6 +69,7 @@ T1w/T2w preprocessing
                               output_spaces=['T1w', 'fsnative',
                                              'template', 'fsaverage5'],
                               skull_strip_template='OASIS',
+                              skull_strip_fixed_seed=False,
                               freesurfer=True,
                               longitudinal=False,
                               debug=False,