editorial updates

Author: KendalBond007

articles/healthcare-apis/fhir/purge-history.md

@@ -10,7 +10,6 @@ ms.author: kesheth
 ---
 
 # Purge history operation
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 `$purge-history` is an operation that allows you to delete the history of a single Fast Healthcare Interoperability Resources (FHIR®) resource. This operation isn't defined in the FHIR specification, but it's useful for [history management](fhir-versioning-policy-and-history-management.md) in large FHIR service instances.
 
 ## Overview of purge history