🎨 修复委托代扣协议部分错误缺失的xml注解

Author: 枫飘满林

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxTerminationContractResult.java

@@ -20,14 +20,15 @@
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
+@XStreamAlias("xml")
 public class WxTerminationContractResult extends BaseWxPayResult implements Serializable {
 
   private static final long serialVersionUID = 1L;
 
   /**
    * 委托代扣协议ID
    */
-  @XStreamAlias("contractId")
+  @XStreamAlias("contract_id")
   private String contractId;
 
   /**