chore: proper npm and Xcode capitalization

[friederbluemle]

Just a couple of minor capitalization fixes.

References:

• https://github.com/npm/cli#is-it-npm-or-npm-or-npm
• https://developer.apple.com/xcode/

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[codecov]

Codecov Report

Merging #1438 (5ce6124) into main (5aac8c9) will increase coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1438      +/-   ##
==========================================
+ Coverage   95.41%   95.54%   +0.12%     
==========================================
  Files          15       15              
  Lines         785      785              
==========================================
+ Hits          749      750       +1     
+ Misses         36       35       -1     

Impacted Files	Coverage Δ
src/copy-filter.js	100.00% <0.00%> (+2.04%)	⬆️

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