update notes

Author: v-lanjli

articles/synapse-analytics/synapse-service-identity.md

@@ -323,7 +323,8 @@ You can create, delete, manage user-assigned managed identities in Microsoft Ent
 In order to use a user-assigned managed identity, you must first [create credentials](../data-factory/credentials.md) in your service instance for the UAMI.
 
 > [!NOTE]
-> User-assigned Managed Identity already supported in Synapse notebooks and Spark job definitions.
+>
+> User-assigned Managed Identity already supported Synapse Notebook activities and Spark job definition activities in pipeline.
 
 ## Next steps