chore(docs): Updated API Reference (v2) (#9666)

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>
Co-authored-by: Shahed Nasser <27354907+shahednasser@users.noreply.github.com>

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

@@ -4,11 +4,11 @@ x-schemaName: AdminOrderChangeAction
 required:
   - order_change
   - order
-  - order_id
-  - internal_note
   - id
   - created_at
   - updated_at
+  - order_id
+  - internal_note
   - return_id
   - exchange_id
   - claim_id
@@ -45,11 +45,7 @@ properties:
     title: exchange_id
     description: The ID of the associated exchange.
   order:
-    type: string
-    title: order
-    description: The order change's order.
-    externalDocs:
-      url: '#pagination'
+    $ref: ./AdminOrder.yaml
   reference:
     type: string
     title: reference