fix some errors when generate crossplane provider (#2650)

Author: hellertang

tencentcloud/services/cam/resource_tc_cam_policy_by_name.go

@@ -182,6 +182,7 @@ func resourceTencentCloudCamPolicyByNameRead(d *schema.ResourceData, meta interf
 		return err
 	}
 	if len(policies) == 0 {
+		d.SetId("")
 		return nil
 	}
 	var instance *cam.GetPolicyResponse

tencentcloud/services/ccn/resource_tc_ccn_attachment.go

@@ -60,7 +60,7 @@ func ResourceTencentCloudCcnAttachment() *schema.Resource {
 				Optional:    true,
 				ForceNew:    true,
 				Computed:    true,
-				Description: "Uin of the ccn attached. Default is ``, which means the uin of this account. This parameter is used with case when attaching ccn of other account to the instance of this account. For now only support instance type `VPC`.",
+				Description: "Uin of the ccn attached. If not set, which means the uin of this account. This parameter is used with case when attaching ccn of other account to the instance of this account. For now only support instance type `VPC`.",
 			},
 			// Computed values
 			"state": {

website/docs/r/ccn_attachment.html.markdown

@@ -63,7 +63,7 @@ The following arguments are supported:
 * `instance_id` - (Required, String, ForceNew) ID of instance is attached.
 * `instance_region` - (Required, String, ForceNew) The region that the instance locates at.
 * `instance_type` - (Required, String, ForceNew) Type of attached instance network, and available values include `VPC`, `DIRECTCONNECT`, `BMVPC` and `VPNGW`. Note: `VPNGW` type is only for whitelist customer now.
-* `ccn_uin` - (Optional, String, ForceNew) Uin of the ccn attached. Default is ``, which means the uin of this account. This parameter is used with case when attaching ccn of other account to the instance of this account. For now only support instance type `VPC`.
+* `ccn_uin` - (Optional, String, ForceNew) Uin of the ccn attached. If not set, which means the uin of this account. This parameter is used with case when attaching ccn of other account to the instance of this account. For now only support instance type `VPC`.
 * `description` - (Optional, String) Remark of attachment.
 
 ## Attributes Reference