Fix overlay detection and remove duplication (#33) #166

Job	Run time
determine-doc-ids	4s
Check diff	0s
Deploy API documentation on Bump.sh (http-proxy)	11s
Deploy API documentation on Bump.sh (cloud-controlplane)	9s
Deploy API documentation on Bump.sh (cloud-dataplane)	7s
Deploy API documentation on Bump.sh (admin)	14s
Deploy API documentation on Bump.sh (schema-registry)	8s
	53s

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