chore(oas): clean up oas (#9354)

* clean up generated oas

* fix issues in docs-util

* more fixes

* align max level

* validation fix

* add missing summaries

* fix validation

* fix exchanges route

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

@@ -1,7 +1,7 @@
 /**
  * @schema AdminFulfillmentSetResponse
  * type: object
- * description: SUMMARY
+ * description: The fulfillment set's details.
  * x-schemaName: AdminFulfillmentSetResponse
  * required:
  *   - fulfillment_set