message: nit: match code example with bigint literal
diff: @@ -50,8 +50,8 @@ const txOptions = {
  senderKey: 'b244296d5907de9864c0b0d51f98a13c52890be0404e83f273144cd5b9960eed01',
  network,
  memo: 'test memo',
  - nonce: new BigNum(0), // set a nonce manually if you don't want builder to fetch from a Stacks node
  - fee: new BigNum(200), // set a tx fee if you don't want the builder to estimate
  + nonce: 0n, // set a nonce manually if you don't want builder to fetch from a Stacks node
  + fee: 200n, // set a tx fee if you don't want the builder to estimate
  anchorMode: AnchorMode.Any,
  };
  