fix：【MALL 商城】linux 部署时，express.client 配置项，因为大写无法识别

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/framework/delivery/core/enums/ExpressClientEnum.java

@@ -12,9 +12,9 @@ import lombok.Getter;
 @AllArgsConstructor
 public enum ExpressClientEnum {
 
-    NOT_PROVIDE("not-provide","未提供"),
-    KD_NIAO("kd-niao", "快递鸟"),
-    KD_100("kd-100", "快递100");
+    NOT_PROVIDE("not_provide","未提供"),
+    KD_NIAO("kd_niao", "快递鸟"),
+    KD_100("kd_100", "快递100");
 
     /**
      * 快递服务商唯一编码