fix(docs): update constants and payment structure in FAssets minting guide (#714)

Author: fassko

docs/fassets/developer-guides/3-fassets-minting.mdx

@@ -74,7 +74,10 @@ The next step is to send the XRP Ledger payment to the agent, and you can use th
 ### XRP Payment Script Breakdown
 
 1. Install the `xrpl` package — it's not included in the Flare Hardhat Starter Kit by default.
-2. Define the needed constants.
+2. Specify the correct constants from the reserve collateral script:
+   - `AGENT_ADDRESS` - Agent's XRP Ledger address.
+   - `AMOUNT_XRP` - XRP amount to send.
+   - `PAYMENT_REFERENCE` - Payment reference from the the reserve collateral script.
 3. Create a client to connect to the XRP Ledger Testnet.
 4. Load the sender wallet.
 5. Construct the payment transaction.

examples/developer-hub-javascript/fassetsCreateXrpPayment.ts

@@ -4,7 +4,7 @@ import { Client, Wallet, xrpToDrops, Payment, TxResponse } from "xrpl";
 
 // 2. Define the constants
 const AGENT_ADDRESS = "r4KgCNzn9ZuNjpf17DEHZnyyiqpuj599Wm"; // Agent underlying chain address
-const AMOUNT_XRP = "20.05"; // XRP amount to send
+const AMOUNT_XRP = "10.025"; // XRP amount to send
 const PAYMENT_REFERENCE =
   "4642505266410001000000000000000000000000000000000000000000f655fb"; // Reference
 
@@ -25,7 +25,13 @@ async function send20XrpWithReference() {
     // XRP amount to send
     Amount: xrpToDrops(AMOUNT_XRP),
     // Payment reference
-    InvoiceID: PAYMENT_REFERENCE, // Reference
+    Memos: [
+      {
+        Memo: {
+          MemoData: PAYMENT_REFERENCE,
+        },
+      },
+    ],
   };
 
   console.log(paymentTx);