Update tutorial.jl

[maeckha]

fixed typo

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.04%. Comparing base (8b5b456) to head (da894bb).
Report is 167 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1129       +/-   ##
===========================================
+ Coverage   70.12%   85.04%   +14.91%     
===========================================
  Files          42       37        -5     
  Lines        2718     2534      -184     
===========================================
+ Hits         1906     2155      +249     
+ Misses        812      379      -433     

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