update en/application-dev/security/accesstoken-guidelines.md.

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

en/application-dev/security/accesstoken-guidelines.md

@@ -70,7 +70,7 @@ Declare the permissions required by the app one by one in the **config.json** fi
 ```
 ## Declaring the ACL
 
-The permission level of **oos.permission.PERMISSION2** is system_basic, which is higher than the app's APL. In this case, use the ACL.
+The permission level of **ohos.permission.PERMISSION2** is system_basic, which is higher than the app's APL. In this case, use the ACL.
 
 In addition to declaring all the permissions in the **config.json** file, you must declare the permissions whose levels are higher than the app's APL in the app's profile. In this example, declare the permission under the **acls** field:
 ```json