fix(pgsql): [126884790] update desc of base_backup_retention_period (#3502)

* update period desc

* update period desc

Author: hellertang

.changelog/3502.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_postgresql_backup_plan_config: update desc of `base_backup_retention_period`
+```

tencentcloud/services/postgresql/resource_tc_postgresql_backup_plan_config.go

@@ -46,7 +46,7 @@ func ResourceTencentCloudPostgresqlBackupPlanConfig() *schema.Resource {
 			"base_backup_retention_period": {
 				Optional:    true,
 				Type:        schema.TypeInt,
-				Description: "Backup retention period in days. Value range:3-7.",
+				Description: "Backup retention period in days. Value range:7-1830.",
 			},
 
 			"backup_period": {

website/docs/r/postgresql_backup_plan_config.html.markdown

@@ -29,7 +29,7 @@ The following arguments are supported:
 
 * `db_instance_id` - (Required, String) instance id.
 * `backup_period` - (Optional, Set: [`String`]) Backup cycle, which means on which days each week the instance will be backed up. The parameter value should be the lowercase names of the days of the week.
-* `base_backup_retention_period` - (Optional, Int) Backup retention period in days. Value range:3-7.
+* `base_backup_retention_period` - (Optional, Int) Backup retention period in days. Value range:7-1830.
 * `max_backup_start_time` - (Optional, String) The latest time to start a backup.
 * `min_backup_start_time` - (Optional, String) The earliest time to start a backup.