docs(cynosdb): update readonly instance field description

Author: iac-agent

.changelog/4319.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_cynosdb_readonly_instance: update instance_name field description
+```

tencentcloud/services/cynosdb/resource_tc_cynosdb_readonly_instance.go

@@ -28,7 +28,7 @@ func ResourceTencentCloudCynosdbReadonlyInstance() *schema.Resource {
 			Type:        schema.TypeString,
 			Required:    true,
 			ForceNew:    true,
-			Description: "Name of instance.",
+			Description: "Instance name.",
 		},
 		"force_delete": {
 			Type:        schema.TypeBool,

website/docs/r/cynosdb_readonly_instance.html.markdown

@@ -40,7 +40,7 @@ resource "tencentcloud_cynosdb_readonly_instance" "foo" {
 The following arguments are supported:
 
 * `cluster_id` - (Required, String, ForceNew) Cluster ID which the readonly instance belongs to.
-* `instance_name` - (Required, String, ForceNew) Name of instance.
+* `instance_name` - (Required, String, ForceNew) Instance name.
 * `force_delete` - (Optional, Bool) Indicate whether to delete readonly instance directly or not. Default is false. If set true, instance will be deleted instead of staying recycle bin. Note: works for both `PREPAID` and `POSTPAID_BY_HOUR` cluster.
 * `instance_cpu_core` - (Optional, Int) The number of CPU cores of read-write type instance in the CynosDB cluster. Required while creating normal cluster. Note: modification of this field will take effect immediately, if want to upgrade on maintenance window, please upgrade from console.
 * `instance_maintain_duration` - (Optional, Int) Duration time for maintenance, unit in second. `3600` by default.