DOC: Document freesurfer parameter in BOLD confound workflow init

[jhlegarreta]

Changes proposed in this pull request

Document freesurfer parameter in BOLD confound workflow initialization function.

Take advantage of the commit to move the name parameter docstring after freesurfer to match the function signature.

Documentation that should be reviewed

init_bold_confs_wf function.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.56%. Comparing base (03e209f) to head (2b8febd).
⚠️ Report is 12 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3504   +/-   ##
=======================================
  Coverage   73.56%   73.56%           
=======================================
  Files          60       60           
  Lines        4600     4600           
  Branches      585      585           
=======================================
  Hits         3384     3384           
  Misses       1087     1087           
  Partials      129      129           

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