Foc_Fan_Duty 加一个具体数值的注释

Signed-off-by: huhui <huhui@sharkgulf.com>

Applications/foc/commands.h

@@ -29,7 +29,7 @@ typedef enum {
 	Foc_Set_Config,
 	Foc_Get_Config,
 	Foc_Get_Pid,
-	Foc_Fan_Duty,
+	Foc_Fan_Duty, //57
 	Foc_Hall_Phase_Cali_Result = 160,
 	Foc_Hall_Offset_Cali_Result,
 	Foc_Report_Speed,