Update Configuration.md

Configuration.md

@@ -13,7 +13,7 @@ The DES startup configuration contains initialization variables that are loaded
  
   
 [System]  
-**RDS_ID** DES identifier (ex. DES_$ID@yourdomain.org)  
+**RDS_ID** DES identifier (ex. DES_yourID@yourdomain.org)  
 **RDS_HOME** HOME directory of DES  
 **CONFIG_FILE_PATH** Path where processor configuration files are located ( $PROCESSOR.processor_config.xml)  
 **LOGS_PATH** STOUT print to stdout | LOG4J : use log4j2| Path of the log file dir (ending with / , ex: ./testdata/logs/ ) directory will be created