fix: torrent redundant directory

[monkeyWie]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 63.38028% with 26 lines in your changes missing coverage. Please review.

Project coverage is 61.14%. Comparing base (d9f04ae) to head (f5a33ec).

Files	Patch %	Lines
pkg/download/model.go	52.17%	11 Missing ⚠️
pkg/download/downloader.go	50.00%	7 Missing and 2 partials ⚠️
internal/protocol/bt/fetcher.go	78.94%	4 Missing ⚠️
internal/protocol/http/fetcher.go	81.81%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #649      +/-   ##
==========================================
+ Coverage   61.12%   61.14%   +0.02%     
==========================================
  Files          35       35              
  Lines        3534     3583      +49     
==========================================
+ Hits         2160     2191      +31     
- Misses       1104     1126      +22     
+ Partials      270      266       -4     

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