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Co-authored-by: Grace Cai <qqzczy@126.com>

tiup/tiup-component-cluster-rename.md

@@ -8,7 +8,7 @@ The cluster name is specified when [the cluster is deployed](/tiup/tiup-componen
 
 > **Note:**
 >
-> If the tiup cluster is configured with the `dashboard_dir` field of `grafana_servers`, when you execute the command `tiup cluster rename` to rename the cluster, the following additional steps are required:
+> If the `dashboard_dir` field of `grafana_servers` is configured for the TiUP cluster, after you execute the command `tiup cluster rename` to rename the cluster, the following additional steps are required:
 >
 > + For the `*.json` files in the local dashboards directory, update the `datasource` field of each file to the new cluster name, because the value of `datasource` must be the name of the cluster.
 > + Execute the command `tiup cluster reload -R grafana`.
@@ -32,4 +32,4 @@ tiup cluster rename <old-cluster-name> <new-cluster-name> [flags]
 
 ## Outputs
 
-The execution log of the tiup-cluster.
+The execution log of the tiup-cluster.

tiup/tiup-component-cluster-restart.md

@@ -18,14 +18,12 @@ tiup cluster restart <cluster-name> [flags]
 
 `<cluster-name>`: the name of the cluster to operate on. If you forget the cluster name, you can check it with the [cluster list](/tiup/tiup-component-cluster-list.md) command.
 
-`<cluster-name>`
-
 ## Options
 
 ### -N, --node
 
-- Specifies the nodes to be restarted. The value of this option is a comma-separated list of node IDs. You can get the node ID from the first column of the [cluster status table](/tiup/tiup-component-cluster-display.md).
-- Data type: `STRINGS`
+- Specifies the nodes to be restarted. The value of this option is a comma-separated list of node IDs. You can get the node IDs from the first column of the [cluster status table](/tiup/tiup-component-cluster-display.md) returned by the `tiup cluster display` command.
+- Data type: `STRING`
 - If this option is not specified, TiUP restarts all nodes by default.
 
 > **Note:**
@@ -34,8 +32,8 @@ tiup cluster restart <cluster-name> [flags]
 
 ### -R, --role
 
-- Specified roles of nodes to be restarted. The value of this option is a comma-separated list of the roles of the nodes. You can get the roles of the nodes from the second column of the [cluster status table](/tiup/tiup-component-cluster-display.md).
-- Data type: `STRINGS`
+- Specified the roles of nodes to be restarted. The value of this option is a comma-separated list of the roles of the nodes. You can get the roles of the nodes from the second column of the [cluster status table](/tiup/tiup-component-cluster-display.md) returned by the `tiup cluster display` command.
+- Data type: `STRING`
 - If this option is not specified, TiUP restarts nodes of all roles by default.
 
 > **Note:**
@@ -50,4 +48,4 @@ tiup cluster restart <cluster-name> [flags]
 
 ## Outputs
 
-The log of the service restart process.
+The log of the service restart process.