docs: document when-then name

www/apps/resources/app/recipes/commerce-automation/restock-notification/page.mdx

@@ -599,7 +599,7 @@ export const subscriptionWorkflow1Highlights = [
   ["16", "createWorkflow", "Create a workflow."],
   ["23", "transform", "Set the customer ID to an empty string if not provided."],
   ["28", "when", "If email is not set, try to retrieve customer by its ID."],
-  ["44", "transform", "Set the email either to the one in the input or the specified customer's email."],
+  ["48", "transform", "Set the email either to the one in the input or the specified customer's email."],
 ]
 
 ```ts title="src/workflows/create-restock-subscription/index.ts" highlights={subscriptionWorkflow1Highlights}
@@ -630,9 +630,13 @@ export const createRestockSubscriptionWorkflow = createWorkflow(
     }, (data) => {
       return data.customer.customer_id || ""
     })
-    const retrievedCustomer = when({ customer }, ({ customer }) => {
-      return !customer.email
-    }).then(() => {
+    const retrievedCustomer = when(
+      "retrieve-customer-by-id",
+      { customer }, 
+      ({ customer }) => {
+        return !customer.email
+      }
+    ).then(() => {
       // @ts-ignore
       const { data } = useQueryGraphStep({
         entity: "customer",