readme: update function name in example

[antoine-gallix]

No description provided.

[codecov]

Codecov Report

Merging #71 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #71   +/-   ##
=======================================
  Coverage   87.22%   87.22%           
=======================================
  Files           3        3           
  Lines        1487     1487           
=======================================
  Hits         1297     1297           
  Misses        190      190           

Flag	Coverage Δ
#GHA_Ubuntu	87.22% <ø> (ø)
#GHA_Windows	87.22% <ø> (ø)
#GHA_macOS	87.22% <ø> (ø)

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[hugovk]

Thank you!