Update 5.account-management.md (#1623)

docs-2.0/nebula-dashboard-ent/5.account-management.md

@@ -54,7 +54,7 @@ The relationship between system roles and cluster roles and their descriptions a
 
 | Roles | Permission                                                         | Description                                                         |
 | ------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| admin  | 1. Create accounts.<br>2. Modify the role of an existing account.<br>3. Perform platform settings, system-level alert settings.<br>4. Delete accounts. | 1. There can be multiple `admin` roles, i.e. system administrators.<br/> 2. An `admin` is the `operator` of all clusters by default, i.e. an `admin` can manage all clusters. <br/>3. Displayed in the cluster member list by default. An `owner` cannot remove an `admin` unless the `admin` is converted to `user`, and the system will automatically remove the `admin` from the cluster member list. |
+| admin  | 1. Create accounts.<br>2. Modify the role of an existing account.<br>3. Perform platform settings, system-level alert settings.<br>4. Delete accounts. | 1. There can be multiple `admin` roles, i.e. system administrators.<br/> 2. An `admin` is the `operator` of all clusters by default, i.e. an `admin` can manage all clusters. <br/>3. An `admin` can assign a `user` to be the `operator` of a cluster.<br/>4. Displayed in the cluster member list by default. An `owner` cannot remove an `admin` unless the `admin` is converted to `user`, and the system will automatically remove the `admin` from the cluster member list. |
 | user   | 1. Has read-only permissions for the system dimension. <br/>2. After an `admin` creates a new account with the `user` role, the `user` account cannot view any clusters if the corresponding cluster is not assigned to the account.  <br/>3. Can create clusters and become the `owner` of the clusters. | 1. General role. <br/>2. There can be multiple `user` roles.           |