Fix parameter check constant

[dweindl]

No description provided.

[codecov-io]

Codecov Report

Merging #82 into develop will decrease coverage by 0.13%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop      #82      +/-   ##
===========================================
- Coverage    60.16%   60.03%   -0.14%     
===========================================
  Files            5        5              
  Lines          605      603       -2     
  Branches       129      128       -1     
===========================================
- Hits           364      362       -2     
  Misses         217      217              
  Partials        24       24

Impacted Files	Coverage Δ
petab/lint.py	40.54% <ø> (-0.64%)	⬇️

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