Fix samples

Author: Chris Clark

docs/samples/balances.js

@@ -1,7 +1,7 @@
 'use strict';
 const RippleAPI = require('../../src').RippleAPI; // require('ripple-lib')
 
-const api = new RippleAPI({servers: ['wss://s1.ripple.com:443']});
+const api = new RippleAPI({server: 'wss://s1.ripple.com:443'});
 const address = 'r3kmLJN5D28dHuH8vZNUZpMC43pEHpaocV';
 
 api.connect().then(() => {

docs/samples/payment.js

@@ -4,13 +4,13 @@ const RippleAPI = require('../../src').RippleAPI; // require('ripple-lib')
 const address = 'INSERT ADDRESS HERE';
 const secret = 'INSERT SECRET HERE';
 
-const api = new RippleAPI({servers: ['wss://s1.ripple.com:443']});
+const api = new RippleAPI({server: 'wss://s1.ripple.com:443'});
 const instructions = {maxLedgerVersionOffset: 5};
 
 const payment = {
   source: {
     address: address,
-    amount: {
+    maxAmount: {
       value: '0.01',
       currency: 'XRP'
     }