chore: review comments

Author: tothandras

api/spec/packages/aip-client-javascript/src/models/schemas.ts

@@ -5169,7 +5169,7 @@ export const invoice = z
   .discriminatedUnion('type', [invoiceStandard])
 
   .describe(
-    'An invoice issued to a customer. The `type` field determines the concrete variant: - `standard`: a standard invoice for charges owed. - `credit_note`: a credit note reducing a previous invoice amount.',
+    'An invoice issued to a customer. The `type` field determines the concrete variant: - `standard`: a standard invoice for charges owed.',
   )
 
 export const listMeteringEventsQueryParams = z.object({

api/spec/packages/aip/src/invoices/invoice.tsp

@@ -31,7 +31,6 @@ scalar InvoiceNumber extends string;
  * The `type` field determines the concrete variant:
  *
  * - `standard`: a standard invoice for charges owed.
- * - `credit_note`: a credit note reducing a previous invoice amount.
  */
 @friendlyName("BillingInvoice")
 @discriminated(#{ discriminatorPropertyName: "type", envelope: "none" })
@@ -801,7 +800,7 @@ model InvoiceLineBaseDiscount {
    * External identifiers for this discount.
    */
   @visibility(Lifecycle.Read)
-  @summary("External IDs")
+  @summary("External references")
   external_references?: InvoiceLineExternalReferences;
 }