App and Environment: correct minor typo (NFC)

[compnerd]

Correct a small typo in a comment (NFC)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 27.23%. Comparing base (45a9e4e) to head (798198b).

Files with missing lines	Patch %	Lines
...iftWin32/App and Environment/ApplicationMain.swift	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #790      +/-   ##
==========================================
+ Coverage   27.05%   27.23%   +0.17%     
==========================================
  Files         129      129              
  Lines        7417     7417              
==========================================
+ Hits         2007     2020      +13     
+ Misses       5410     5397      -13     

Files with missing lines	Coverage Δ
...iftWin32/App and Environment/ApplicationMain.swift	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes