Fix request body size limit for Azure Health Data Services

Corrected the maximum request body size for Azure Health Data Services from 30 MB to 28 MB.

Author: EXPEkesheth

articles/healthcare-apis/fhir/fhir-features-supported.md

@@ -66,7 +66,7 @@ SMART on FHIR Implementation Guide defines access to FHIR resource types with sc
 
 ## Service limits
 
-* **Request body size** - AAzure API for FHIR supports up to 2 MB per request, while Azure Health Data Services (FHIR) supports up to 30 MB.
+* **Request body size** - Azure API for FHIR supports up to 2 MB per request, while Azure Health Data Services (FHIR) supports up to 28 MB.
 * **Bundle size** - Each bundle is limited to 500 items.
 * **Subscription Limit** - By default, each subscription is limited to a maximum of 10 FHIR services. The limit can be used in one or many workspaces.
 * **Storage size** - By default each FHIR instance is limited to storage capacity of 4 TB. To deploy a FHIR instance with storage capacity beyond 4 TB, create support request with Issue type **Service and Subscription limit (quotas)**.