Fix missing line break when pruning title header

[lemoony]

No description provided.

[codecov]

Codecov Report

Merging #38 (9c18185) into main (1a96476) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #38      +/-   ##
==========================================
+ Coverage   88.08%   88.10%   +0.01%     
==========================================
  Files          71       71              
  Lines        3224     3229       +5     
==========================================
+ Hits         2840     2845       +5     
  Misses        286      286              
  Partials       98       98              

Flag	Coverage Δ
Linux	87.76% <100.00%> (+0.01%)	⬆️
macOS	88.10% <100.00%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
internal/utils/titleheader/title_header.go	98.71% <100.00%> (+0.08%)	⬆️

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