sesman: brief xorg_params, no logic change

sesman/config.h

@@ -220,16 +220,14 @@ struct config_sesman
    */
   struct list* rdp_params;
   /**
-   * @var log
+   * @var xorg_params
-   * @brief Log configuration struct
+   * @brief Xorg additional parameter list
    */
-
   struct list* xorg_params;
   /**
    * @var log
    * @brief Log configuration struct
    */
-
   //struct log_config log;
   /**
    * @var sec