Fix typo: specifed -> specified

[changeworld]

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[learn-build-service-prod]

Learn Build status updates of commit d6724ff:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/parallel/concrt/codesnippet/CPP/how-to-create-a-task-that-completes-after-a-delay_1.cpp	✅Succeeded
docs/parallel/concrt/codesnippet/CPP/how-to-create-a-task-that-completes-after-a-delay_3.cpp	✅Succeeded

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PRMerger Results

Issue	Description
Unapproved file extension(s)	This PR contains file types that are not supported in the repo. The only supported file types are jpg, gif, png, json, svg and md.