Fix the rest of the matchProfile(s) to matchProfiles(s)

[DHowett]

Closes #715

[learn-build-service-prod[bot]]

Learn Build status updates of commit 22632e1:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
TerminalDocs/customize-settings/appearance.md	:white_check_mark:Succeeded	View

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