Add missing f-string in setup.py

[legoktm]

Otherwise you end up with:

Using found library at {config.found_libzim}. Adjust CFLAGS/LDFLAGS if needed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.49%. Comparing base (1113083) to head (5d563d9).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #204   +/-   ##
=======================================
  Coverage   93.49%   93.49%           
=======================================
  Files           1        1           
  Lines         523      523           
=======================================
  Hits          489      489           
  Misses         34       34           

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[rgaudin]

Sorry I saw the branch and not the PR (my mistake) and thought you were not planning on pushing it. Already pushed it