docs: generate API reference for 2.12.0 (#14185)

www/apps/api-reference/specs/admin/code_samples/JavaScript/admin_order-changes_{id}/post.js

@@ -0,0 +1,19 @@
+import Medusa from "@medusajs/js-sdk"
+
+export const sdk = new Medusa({
+  baseUrl: import.meta.env.VITE_BACKEND_URL || "/",
+  debug: import.meta.env.DEV,
+  auth: {
+    type: "session",
+  },
+})
+
+sdk.admin.order.updateOrderChange(
+  "ordch_123",
+  {
+    carry_over_promotions: true
+  }
+)
+.then(({ order_change }) => {
+  console.log(order_change)
+})