doc(redis): add missing attributes references for data_source redis c…

…luster (#2606)

docs/data-sources/redis_cluster.md

@@ -38,5 +38,21 @@ data "scaleway_redis_cluster" "my_cluster" {
 In addition to all above arguments, the following attributes are exported:
 
 - `id` - The ID of the Redis cluster.
+- `version` - Redis's Cluster version (e.g. `6.2.7`).
+- `user_name` -  The first user of the Redis Cluster.
+- `password` - Password of the first user of the Redis Cluster.
+- `created_at` - The date and time of creation of the Redis Cluster.
+- `updated_at` - The date and time of the last update of the Redis Cluster.
+- `cluster_size` - The number of nodes in the Redis Cluster.
+- `node_type` - The type of Redis Cluster (e.g. `RED1-M`).
+- `public_network` - Public network details.
+- `private_network` - List of private networks endpoints of the Redis Cluster.
+- `endpoint_id` - The ID of the endpoint.
+- `tls_enabled` -  Whether TLS is enabled or not.
+- `acl` - List of acl rules.
+- `settings` -  Map of settings for redis cluster.
+- `certificate` - The PEM of the certificate used by redis, only when `tls_enabled` is true.
+- `tags` - The tags associated with the Redis Cluster.
+
 
 ~> **Important:** Redis clusters' IDs are [zoned](../guides/regions_and_zones.md#resource-ids), which means they are of the form `{zone}/{id}`, e.g. `fr-par-1/11111111-1111-1111-1111-111111111111`