update zh-cn/device-dev/subsystems/subsys-usbservice-overview.md.

Signed-off-by: N duangavin123 <duanxichao@huawei.com> Signed-off-by: N duangavin123 <duanxichao@huawei.com>

update zh-cn/device-dev/subsystems/subsys-usbservice-overview.md.
Signed-off-by: N duangavin123 <duanxichao@huawei.com> Signed-off-by: N duangavin123 <duanxichao@huawei.com>
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+++ b/zh-cn/device-dev/subsystems/subsys-usbservice-overview.md
 # USB服务子系统概述<a name="ZH-CN_TOPIC_0000001092893508"></a>
-   [概述](#section175431838101617)
-   [接口说明](#section83365421647)
-    -   [Host部分](#section83365421658)
-    -   [Device部分](#section83365421669)
-    -   [Port部分](#section83365421670)
 ## 概述<a name="section175431838101617"></a>