fix typo by textoutput

[cserteGT3]

I assume that this is a typo.

(Should I PR every small thing like this? Or just open an issue?)

[codecov]

Codecov Report

Merging #183 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #183   +/-   ##
=======================================
  Coverage   88.32%   88.32%           
=======================================
  Files          25       25           
  Lines        1019     1019           
=======================================
  Hits          900      900           
  Misses        119      119

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[tlienart]

Thanks! PR or issue is fine either way, and very useful