update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/device-dev/subsystems/subsys-security-sigverify.md

@@ -62,7 +62,7 @@ The following table lists the innerkits APIs provided by the signature verificat
 </tbody>
 </table>
 
-**Table  2**  APIs provided by the signature verification component for standard systems
+**Table  2**  API provided by the signature verification component for standard systems
 
 <a name="table10383348161613"></a>
 <table><thead align="left"><tr id="row9384114813161"><th class="cellrowborder" valign="top" width="37.66%" id="mcps1.2.3.1.1"><p id="p038411483162"><a name="p038411483162"></a><a name="p038411483162"></a>API</p>