[ENH] rename output func qa

[Remi-Gau]

closes #532

• rename func QA output
• update one of the openneuro demo to "test it"

[codecov]

Codecov Report

Merging #533 (694380e) into dev (827a638) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #533      +/-   ##
==========================================
+ Coverage   72.78%   72.81%   +0.03%     
==========================================
  Files         197      197              
  Lines        4420     4425       +5     
==========================================
+ Hits         3217     3222       +5     
  Misses       1203     1203              

Flag	Coverage Δ
unittests	72.81% <100.00%> (+0.03%)	⬆️

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Impacted Files	Coverage Δ
src/defaults/set_spm_2_bids_defaults.m	100.00% <100.00%> (ø)

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