chore(docs): Updated API Reference (v2) (#9148)

Automated changes by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

www/apps/api-reference/specs/admin/components/schemas/AdminExchangeRequestResponse.yaml

@@ -1,5 +1,5 @@
 type: object
-description: SUMMARY
+description: The details of a requested exchange.
 x-schemaName: AdminExchangeRequestResponse
 required:
   - return
@@ -7,8 +7,10 @@ required:
   - exchange
 properties:
   return:
+    description: The associated return's details.
     $ref: ./AdminReturn.yaml
   order_preview:
+    description: A preview of the order once the exchange is applied.
     $ref: ./OrderPreview.yaml
   exchange:
     $ref: ./AdminExchange.yaml