quick fix (Azure#23788)

Author: rakshith91

sdk/eventgrid/azure-eventgrid/azure/eventgrid/_event_mappings.py

@@ -146,11 +146,11 @@ class SystemEventNames(str, Enum):
 
     EventHubCaptureFileCreatedEventName = 'Microsoft.EventHub.CaptureFileCreated'
 
-    FhirResourceCreatedEventName = 'Microsoft.HealthcareApis.FhirResourceCreated'
+    HealthcareFhirResourceCreatedEventName = 'Microsoft.HealthcareApis.FhirResourceCreated'
 
-    FhirResourceDeletedEventName = 'Microsoft.HealthcareApis.FhirResourceDeleted'
+    HealthcareFhirResourceDeletedEventName = 'Microsoft.HealthcareApis.FhirResourceDeleted'
 
-    FhirResourceUpdatedEventName = 'Microsoft.HealthcareApis.FhirResourceUpdated'
+    HealthcareFhirResourceUpdatedEventName = 'Microsoft.HealthcareApis.FhirResourceUpdated'
 
     IotHubDeviceConnectedEventName = 'Microsoft.Devices.DeviceConnected'