update docs

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

en/application-dev/reference/apis/js-apis-distributed-account.md

 # Distributed Account Management<a name="EN-US_TOPIC_0000001160355878"></a>
 
->![](../../public_sys-resources/icon-note.gif) **NOTE:** 
+>![](../../public_sys-resources/icon-note.gif) **NOTE** 
+>
 >The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 ## Modules to Import<a name="s56d19203690d4782bfc74069abb6bd71"></a>
@@ -9,6 +10,12 @@
 import account_distributedAccount from '@ohos.account.distributedAccount';
 ```
 
+
+## System Capabilities
+
+SystemCapability.Account.OsAccount
+
+
 ## account\_distributedAccount.getDistributedAccountAbility<a name="section192192415554"></a>
 
 getDistributedAccountAbility\(\): DistributedAccountAbility
@@ -297,4 +304,3 @@ Defines distributed OS account information.
 </tr>
 </tbody>
 </table>
-