chore(oas): [14/n] improve OAS schemas (#9202)

* chore(oas): [14/n] improve OAS schemas

* fix description of required_quantity

www/utils/generated/oas-output/schemas/AdminUpdateCustomerGroup.ts

@@ -1,7 +1,7 @@
 /**
  * @schema AdminUpdateCustomerGroup
  * type: object
- * description: SUMMARY
+ * description: The details to update in a customer group.
  * x-schemaName: AdminUpdateCustomerGroup
  * properties:
  *   name:
@@ -10,7 +10,7 @@
  *     description: The customer group's name.
  *   metadata:
  *     type: object
- *     description: The customer group's metadata.
+ *     description: The customer group's metadata, can hold custom key-value pairs.
  * 
 */