update zh-cn/device-dev/kernel/kernel-small-debug-process-cpu.md.

Signed-off-by: NAustin <liaozhiqi7@huawei.com>

zh-cn/device-dev/kernel/kernel-small-debug-process-cpu.md

@@ -139,7 +139,7 @@ UINT32 ItCpupTest(VOID)
     cpupUse = LOS_HistorySysCpuUsage(CPU_LESS_THAN_1S); 
     printf("the history system cpu usage in all time：%u.%u\n",
            cpupUse / LOS_CPUP_PRECISION_MULT, cpupUse % LOS_CPUP_PRECISION_MULT);
-    /* 获取指定任务的cpu占用率，该测试例程中指定的任务为以上创建的cpup测试任务 */    
+    /* 获取指定任务的CPU占用率，该测试例程中指定的任务为以上创建的cpup测试任务 */    
     cpupUse = LOS_HistoryTaskCpuUsage(g_cpuTestTaskID, CPU_LESS_THAN_1S);   
     printf("cpu usage of the cpupTestTask in all time:\n TaskID: %d\n usage: %u.%u\n",
            g_cpuTestTaskID, cpupUse / LOS_CPUP_PRECISION_MULT, cpupUse % LOS_CPUP_PRECISION_MULT);