Update code snippet in README

[dominik-korsa]

It appears that the example usage snippet was updated in 6b3e68c, but the README was not. This PR fixes that

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.48%. Comparing base (7714f31) to head (c0a973f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
- Coverage   71.69%   71.48%   -0.21%     
==========================================
  Files           2        2              
  Lines         272      263       -9     
  Branches      272      263       -9     
==========================================
- Hits          195      188       -7     
+ Misses         75       73       -2     
  Partials        2        2              

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[qwandor]

Thanks!