update README.md

RuoYi

2021-01-14 99390fda05f53af18a07a3ba5194bada39a54716

 ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/constant/ServiceNameConstants.java

@@ -16,4 +16,9 @@
     * 系统模块的serviceid

     */

    public static final String SYSTEM_SERVICE = "ruoyi-system";



    /**

     * 文件服务的serviceid

     */

    public static final String FILE_SERVICE = "ruoyi-file";

}