[spec] Fix typo (#2037) #496

Job	Run time
build-web-api-spec	29s
build-js-api-spec	31s
build-core-spec	11m 5s
build-code-metadata-spec	2m 47s
build-legacy-exceptions-js-api-spec	29s
build-legacy-exceptions-core-spec	1m 48s
build-spec-versions	5s
publish-spec	13s
	17m 27s

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