Fixed #58 with a page detection issue

[bbbco]

Fixes this issue by allowing the getPageFilePath() to always run against all assets, and allows it to determine if it needs to add the .html extension or not based on the construction of the URL.

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.

Project coverage is 47.35%. Comparing base (137bf38) to head (4834fb6).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
scraper/download.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #59      +/-   ##
==========================================
- Coverage   47.55%   47.35%   -0.21%     
==========================================
  Files          14       14              
  Lines        1024     1022       -2     
==========================================
- Hits          487      484       -3     
- Misses        485      486       +1     
  Partials       52       52              

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[cornelk]

@bbbco thank you for the contribution, unfortunately the parameter isAPage can not be removed as this will break existing functionality. I updated the main branch code with comments to explain the need for this parameter better.