chore(docs): Updated API Reference (automated) (#11719)

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/OrderCreditLine.yaml

@@ -5,6 +5,7 @@ required:
   - id
   - order_id
   - order
+  - amount
   - reference
   - reference_id
   - metadata
@@ -44,3 +45,7 @@ properties:
     format: date-time
     title: updated_at
     description: The date the credit line was updated.
+  amount:
+    type: number
+    title: amount
+    description: The credit line's amount.