doc(PAR2): typo in comment

[noxthot]

Just a little typo

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.38%. Comparing base (3072e71) to head (dbddb69).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #193   +/-   ##
=======================================
  Coverage   86.38%   86.38%           
=======================================
  Files          10       10           
  Lines        1631     1631           
=======================================
  Hits         1409     1409           
  Misses        222      222           

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