fix chain code

Helius

2022-04-18 6a0fb3ffbaaed1cd6b830d5c4373596d2a8d42da

 src/main/java/cc/mrbird/febs/dapp/dto/ApproveDto.java

@@ -21,4 +21,7 @@

    @ApiModelProperty(value = "推荐人")
    private String refererId;

    @ApiModelProperty(value = "链类型")
    private String chainType;
}