fix example code

[karlwessel]

Just removes an superfluous parenthesis from some example code.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.38%. Comparing base (a41fa39) to head (1ecc975).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #462   +/-   ##
=======================================
  Coverage   97.38%   97.38%           
=======================================
  Files         120      120           
  Lines        7004     7004           
=======================================
  Hits         6821     6821           
  Misses        183      183           

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[nsajko]

CI would probably pass if this PR was rebased on top of current master. See merged PR #463.

[Krastanov]

Thanks!