Fix broken URL for Quartz Event Reference in eventtap docs

[jacix]

eventtap docs point to https://developer.apple.com/hints/reference/coregraphics/quartz_event_services which is broken. New location is https://developer.apple.com/documentation/coregraphics/quartz-event-services.

[github-actions]

This pull request does not contain a valid label. Please add one of the following labels: ['pr-fix', 'pr-change', 'pr-feature', 'pr-maintenance']

[jacix]

I don't have permissions to add a label, so would one of the maintainers add label ['pr-fix']? Thanks!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 27.27%. Comparing base (b6b3b22) to head (7bb6fe9).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3841      +/-   ##
==========================================
+ Coverage   27.22%   27.27%   +0.04%     
==========================================
  Files         191      191              
  Lines       51537    51537              
==========================================
+ Hits        14032    14055      +23     
+ Misses      37505    37482      -23     

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[latenitefilms]

@cmsj - Not sure why the tests are failing, but this should be safe to merge as it's only updating documentation anyway