docs仓资料遗漏整改修补

Signed-off-by: Nlichenchen <lichenchen15@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-appAccount.md

@@ -797,7 +797,7 @@ getAssociatedData(name: string, key: string): Promise<string>
   });
   ```
 
-### getAssociatedDataSync
+### getAssociatedDataSync<sup>9+</sup>
 
 getAssociatedDataSync(name: string, key: string): string;
 

zh-cn/application-dev/reference/apis/js-apis-osAccount.md

@@ -2281,6 +2281,8 @@ constructor()
 
 创建Pin码认证的实例。
 
+此接口为系统接口，三方应用不支持调用。
+
 **系统能力**：SystemCapability.Account.OsAccount
 
 **示例：**