update ds18b20 sample code

guowenxue

2019-07-21 1677e7c0cd68ba171b02828acac56938dbfec73a

update ds18b20 sample code

 modules/c/ds18b20.c

@@ -32,7 +32,7 @@
                return 1;
        }

        printf("DS19B20 get temperature: %f ℃\n", temp);
        printf("DS18B20 get temperature: %f ℃\n", temp);
        return 0;
}