update docs

Signed-off-by: N ge-yafang <geyafang@huawei.com>

update docs
Signed-off-by: N ge-yafang <geyafang@huawei.com>
49fb93eb · ge-yafang · cd2b3edf · 49fb93eb
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en/application-dev/device/usb-guidelines.md en/application-dev/device/usb-guidelines.md +46 -46

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--- a/en/application-dev/device/usb-guidelines.md
+++ b/en/application-dev/device/usb-guidelines.md
@@ -90,9 +90,9 @@ You can set a USB device as the USB host to connect to other USB devices for dat
         }
       ]
    */
-
    ```
   
+
 2.  Obtain the device operation permissions.

    ```js