doc: Adds retain_backups_enabled details on error (#3308)

* doc: Adds `retain_backups_enabled`  details on error

* chore: apply PR suggestion

* remove accidental tab

* chore: Remove double specification

* chore: consistent `*` usage

Author: EspenAlbert

docs/resources/advanced_cluster (preview provider 2.0.0).md

@@ -602,11 +602,9 @@ Refer to the following for full privatelink endpoint connection string examples:
   Backup uses:
   [Cloud Backups](https://docs.atlas.mongodb.com/backup/cloud-backup/overview/#std-label-backup-cloud-provider) for dedicated clusters.
   [Flex Cluster Backups](https://www.mongodb.com/docs/atlas/backup/cloud-backup/flex-cluster-backup/) for flex clusters.
-  If "`backup_enabled`" : `false`, the cluster doesn't use Atlas backups.
+  If "`backup_enabled`"  is `false` (default), the cluster doesn't use Atlas backups.
 
-This parameter defaults to false.
-
-* `retain_backups_enabled` - (Optional) Set to true to retain backup snapshots for the deleted cluster. M10 and above only.
+* `retain_backups_enabled` - (Optional) Set to true to retain backup snapshots for the deleted cluster. M10 and above only. This only applies to the `Delete` operation. If you see the `CANNOT_DELETE_SNAPSHOT_WITH_BACKUP_COMPLIANCE_POLICY` error code, set it to explicit `true`.
 
 **NOTE** Prior version of provider had parameter as `bi_connector` state will migrate it to new value you only need to update parameter in your terraform file
 

docs/resources/advanced_cluster.md

@@ -429,11 +429,9 @@ Refer to the following for full privatelink endpoint connection string examples:
   Backup uses:
   [Cloud Backups](https://docs.atlas.mongodb.com/backup/cloud-backup/overview/#std-label-backup-cloud-provider) for dedicated clusters.
   [Flex Cluster Backups](https://www.mongodb.com/docs/atlas/backup/cloud-backup/flex-cluster-backup/) for flex clusters.
-  If "`backup_enabled`" : `false`, the cluster doesn't use Atlas backups.
+  If "`backup_enabled`"  is `false` (default), the cluster doesn't use Atlas backups.
 
-This parameter defaults to false.
-
-* `retain_backups_enabled` - (Optional) Set to true to retain backup snapshots for the deleted cluster. M10 and above only.
+* `retain_backups_enabled` - (Optional) Set to true to retain backup snapshots for the deleted cluster. M10 and above only. This only applies to the `Delete` operation. If you see the `CANNOT_DELETE_SNAPSHOT_WITH_BACKUP_COMPLIANCE_POLICY` error code, set it to explicit `true`.
 
 **NOTE** Prior version of provider had parameter as `bi_connector` state will migrate it to new value you only need to update parameter in your terraform file
 

docs/resources/cluster.md

@@ -303,9 +303,9 @@ But in order to explicitly change `provider_instance_size_name` comment the `lif
     backup_enabled = "false"
     cloud_backup = "true"
     ```
-    * The default value is false.  M10 and above only.
+  * The default value is false. M10 and above only.
 
-* `retain_backups_enabled` - (Optional) Set to true to retain backup snapshots for the deleted cluster. M10 and above only. 
+* `retain_backups_enabled` - (Optional) Set to true to retain backup snapshots for the deleted cluster. M10 and above only. This only applies to the `Delete` operation. If you see the `CANNOT_DELETE_SNAPSHOT_WITH_BACKUP_COMPLIANCE_POLICY` error code, set it to explicit `true`.
 * `bi_connector_config` - (Optional) Specifies BI Connector for Atlas configuration on this cluster. BI Connector for Atlas is only available for M10+ clusters. See [BI Connector](#bi-connector) below for more details.
 * `cluster_type` - (Required) Specifies the type of the cluster that you want to modify. You cannot convert a sharded cluster deployment to a replica set deployment.