fix(okxNewPrice): 修复合约面值配置错误并更新文档

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2026-06-02 d663147264d0fc97e9e7ddbd4aeee69e833ad025

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package com.xcong.excoin.utils.api.response;
 
public class Symbol {
 
    public String baseCurrency;
    public String quoteCurrency;
    public String symbol;
 
}