fix --lines CLI argument

[synfinatic]

Fixes: #1037

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.43%. Comparing base (09b3c07) to head (c3e9267).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1038      +/-   ##
==========================================
+ Coverage   84.14%   84.43%   +0.30%     
==========================================
  Files          35       35              
  Lines        3038     3037       -1     
==========================================
+ Hits         2556     2564       +8     
+ Misses        389      380       -9     
  Partials       93       93              

Flag	Coverage Δ
unittests	84.43% <100.00%> (+0.30%)	⬆️

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Files	Coverage Δ
internal/logger/logger.go	75.00% <100.00%> (ø)
internal/sso/settings.go	76.70% <100.00%> (-0.11%)	⬇️

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