update en/device-dev/guide/device-camera-visual-run.md.

Signed-off-by: Nduangavin123 <duanxichao@huawei.com>

en/device-dev/guide/device-camera-visual-run.md

 # Running on the Device<a name="EN-US_TOPIC_0000001054809161"></a>
 
-Before you install the application and run it on the development board, install the DevEco Device Tool by following operations provided in  [HUAWEI DevEco Device Tool User Guide](https://device.harmonyos.com/en/docs/ide/user-guides/service_introduction-0000001050166905). Burn OpenHarmony into the development board, and run it on the board. For details about how to compile, burn, and run an image, see the  [Hi3516 Development Board](../quick-start/quickstart-lite-introduction-hi3516.md#section26131214194212). After the image is running normally and the system is started properly, perform the following steps to install or uninstall the application:
+Before you install the application and run it on the development board, install the DevEco Device Tool by following operations provided in  [HUAWEI DevEco Device Tool User Guide](https://device.harmonyos.com/en/docs/ide/user-guides/service_introduction-0000001050166905). Burn OpenHarmony into the development board, and run it on the board. For details about how to compile, burn, and run an image, see the  [Hi3516 Development Board](../quick-start/quickstart-lite-introduction-hi3516.md). After the image is running normally and the system is started properly, perform the following steps to install or uninstall the application:
 
 1.  Store the compiled unsigned application installation package and installation tool in an SD card and insert the SD card into the development board slot. The installation tool is in  **dev\_tools**  of the directory where the image file is generated.
 2.  Run the following command to disable signature verification, which is enabled by default for application installation: