Add note and validation for permission

docs/resources/swr_domain_v2.md

@@ -42,6 +42,8 @@ The following arguments are supported:
 
 * `access_domain` - (Required) The name of the domain for image sharing.
 
+-> `access_domain` should be an existing OTC domain.
+
 * `permission` - (Required) Permission to be granted. Currently, only the `read` permission is supported.
 
 * `deadline` - (Required) End date of image sharing (UTC). When the value is set to `forever`,
@@ -52,11 +54,9 @@ The following arguments are supported:
 
 ## Attributes Reference
 
-The following attributes are exported:
-
-* `name` - See Argument Reference above.
+In addition to all arguments above, the following attributes are exported:
 
-* `creater_id` - Username ID of the domain creator.
+* `creator_id` - Username ID of the domain creator.
 
 * `creator_name` - Username of the domain creator.
 

opentelekomcloud/services/swr/resource_opentelekomcloud_swr_domain_v2.go

@@ -8,6 +8,7 @@ import (
 	"github.com/hashicorp/go-multierror"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
 	"github.com/opentelekomcloud/gophertelekomcloud/openstack/swr/v2/domains"
 	"github.com/opentelekomcloud/terraform-provider-opentelekomcloud/opentelekomcloud/common/cfg"
 	"github.com/opentelekomcloud/terraform-provider-opentelekomcloud/opentelekomcloud/common/fmterr"
@@ -43,6 +44,9 @@ func ResourceSwrDomainV2() *schema.Resource {
 			"permission": {
 				Type:     schema.TypeString,
 				Required: true,
+				ValidateFunc: validation.StringInSlice([]string{
+					"read",
+				}, false),
 			},
 			"deadline": {
 				Type:     schema.TypeString,