Update articles/api-management/api-management-howto-properties.md

Author: Jak-MS

articles/api-management/api-management-howto-properties.md

@@ -42,6 +42,7 @@ Using key vault secrets is recommended because it helps improve API Management s
 * Secrets stored in key vaults can be reused across services
 * Granular [access policies](/azure/key-vault/general/security-features#privileged-access) can be applied to secrets
 * Secrets updated in the key vault are automatically rotated in API Management. After update in the key vault, a named value in API Management is updated within 4 hours. You can also manually refresh the secret using the Azure portal or via the management REST API.
+
 > [!NOTE]
 > The secrets stored in Azure Key Vault must be between 1 and 4096 characters, as API Management cannot retrieve values that exceed this limit.
 ## Prerequisites