update zh-cn/device-dev/subsystems/subsys-sensor-guide.md.

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

zh-cn/device-dev/subsystems/subsys-sensor-guide.md

@@ -8,65 +8,65 @@
 
 1.  导入需要的包
 
-```
-#include "sensor_agent.h"
-#include "sensor_agent_type.h"
-```
-
-1.  创建传感器回调函数
-
-```
-void SensorDataCallbackImpl(SensorEvent *event)
-{
-    if(event == NULL){
-        return;
-    }
-    float *sensorData=(float *)event->data;
-}
-```
+    ```
+    #include "sensor_agent.h"
+    #include "sensor_agent_type.h"
+    ```
+
+2.  创建传感器回调函数
+ 
+    ```
+    void SensorDataCallbackImpl(SensorEvent *event)
+    {
+       if(event == NULL){
+          return;
+       }
+        float *sensorData=(float *)event->data;
+     }
+    ```
 
 >![](../public_sys-resources/icon-note.gif) **说明：** 
 >回调函数的格式为RecordSensorCallback类型。
 
-1.  获取设备支持sensor列表
+3.  获取设备支持sensor列表
 
-```
-SensorInfo *sensorInfo = (SensorInfo *)NULL;
-int32_t count = 0;
-int32_t ret = GetAllSensors(&sensorInfo, &count);
-```
+    ```
+    SensorInfo *sensorInfo = (SensorInfo *)NULL;
+    int32_t count = 0;
+    int32_t ret = GetAllSensors(&sensorInfo, &count);
+    ```
 
-1.  创建的传感器用户
+4.  创建的传感器用户
 
-```
-SensorUser sensorUser;
-sensorUser.callback = SensorDataCallbackImpl; //成员变量callback指向创建的回调方法
-```
+    ```
+    SensorUser sensorUser;
+    sensorUser.callback = SensorDataCallbackImpl; //成员变量callback指向创建的回调方法
+    ```
 
-1.  使能传感器
+5.  使能传感器
 
-```
-int32_t ret = ActivateSensor(0, &sensorUser);
-```
+    ```
+    int32_t ret = ActivateSensor(0, &sensorUser);
+    ```
 
-1.  订阅传感器数据
+6.  订阅传感器数据
 
-```
-int32_t ret = SubscribeSensor(0, &sensorUser);
-```
+    ```
+    int32_t ret = SubscribeSensor(0, &sensorUser);
+    ```
 
 >![](../public_sys-resources/icon-note.gif) **说明：** 
 >到这步就可以在实现的回调方法中获取到传感器数据。
 
-1.  取消传感器数据订阅
+7.  取消传感器数据订阅
 
-```
-int32_t ret = UnsubscribeSensor(0, &sensorUser);
-```
+    ```
+    int32_t ret = UnsubscribeSensor(0, &sensorUser);
+    ```
 
-1.  去使能一个传感器
+8.  去使能一个传感器
 
-```
-int32_t ret = DeactivateSensor(0, &sensorUser);
-```
+    ```
+    int32_t ret = DeactivateSensor(0, &sensorUser);
+    ```