fix: update create order endpoint

Author: Atanda1

docs/guides/sender.md

@@ -87,7 +87,7 @@ const accountName = "https://api.paycrest.io/v1/verify-account";
 const createOrder = "https://api.paycrest.io/v1/sender/orders";
 
   try {
-    const response = await fetch(accountName, {
+    const response = await fetch(createOrder, {
       method: "POST",
       headers: { "Content-Type": "application/json", "API-Key": "208a4aef-1320-4222-82b4-e3bca8781b4b" },
       body: JSON.stringify(orderParams)
@@ -215,4 +215,4 @@ Once you deploy your server and get the endpoint, you can listen to payment orde
 
 If pending, your frontend would have to continue pollling till it gets back a conclusive response - either `expired`, `settled`, or `refunded`. 
 
-**P.S**: This backend structure can be done in any custom way depending on your app as long as the webhook validates and stores the correct payload sent to it.
+**P.S**: This backend structure can be done in any custom way depending on your app as long as the webhook validates and stores the correct payload sent to it.