最后一行增加空行

hwtimer_sample.c

@@ -92,4 +92,4 @@ static int hwtimer_sample(int argc, char *argv[])
     return ret;
 }
 /* 导出到 msh 命令列表中 */
-MSH_CMD_EXPORT(hwtimer_sample, hwtimer sample);
+MSH_CMD_EXPORT(hwtimer_sample, hwtimer sample);

sd_sample.c

@@ -124,4 +124,4 @@ static int sd_sample(int argc, char *argv[])
     return RT_EOK;
 }
 /* µ¼³öµ½ msh ÃüÁîÁбíÖÐ */
-MSH_CMD_EXPORT(sd_sample, sd device sample);
+MSH_CMD_EXPORT(sd_sample, sd device sample);