Update debiasing call for stability selection PFM

[eurunuela]

Closes none.

Changes proposed in this pull request:

• Adjust the call to the debiasing function debiasing().
• Rename the abstract folder from ismrm2022 to ohbm2022.

[codecov]

Codecov Report

Merging #46 (4dcd78d) into main (2df164e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #46   +/-   ##
=======================================
  Coverage   86.15%   86.15%           
=======================================
  Files          15       15           
  Lines         816      816           
=======================================
  Hits          703      703           
  Misses        113      113           

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