update:swagger文档

cooleshow-user/user-biz/src/main/java/com/yonge/cooleshow/biz/dal/entity/SysMessage.java

@@ -62,7 +62,7 @@ public class SysMessage extends BaseEntity {
 	@ApiModelProperty(value = "是否已读",required = false)
 	private Integer readStatus;
 	
-	@ApiModelProperty(value = "消息组",required = false)
+	@ApiModelProperty(value = "消息组 SYSTEM：系统消息  COURSE:课程信息 NOTICE:公告",required = false)
 	private String group;
 
 	@ApiModelProperty(value = "极光推送客户端标识",required = false)