Update overview.md

changed 28 to 27 entities since we dropped bioID

Author: kimiamavon-msft

articles/healthcare-apis/deidentification/overview.md

@@ -11,7 +11,7 @@ ms.author: kimiamavon
 
 # What is the de-identification service?
 
-The de-identification service in Azure Health Data Services enables healthcare organizations to anonymize clinical data so that the resulting data retains its clinical relevance and distribution while also adhering to the Health Insurance Portability and Accountability Act of 1996 (HIPAA) Privacy Rule. The service uses state-of-the-art machine learning models to automatically extract, redact, or surrogate 28 entities - including the HIPAA 18 Protected Health Information (PHI) identifiers – from unstructured text such as clinical notes, transcripts, messages, or clinical trial studies.
+The de-identification service in Azure Health Data Services enables healthcare organizations to anonymize clinical data so that the resulting data retains its clinical relevance and distribution while also adhering to the Health Insurance Portability and Accountability Act of 1996 (HIPAA) Privacy Rule. The service uses state-of-the-art machine learning models to automatically extract, redact, or surrogate 27 entities - including the HIPAA 18 Protected Health Information (PHI) identifiers – from unstructured text such as clinical notes, transcripts, messages, or clinical trial studies.
 
 ## Use de-identified data in research, analytics, and machine learning