feat(mongodb): add datasource doc

Author: jremy42

docs/data-sources/mongodb_instance.md

@@ -0,0 +1,69 @@
+
+---
+subcategory: "MongoDB"
+page_title: "Scaleway: scaleway_mongodb_instance"
+---
+
+# scaleway_mongodb_instance
+
+Gets information about a MongoDB Instance.
+
+For further information refer to the Managed Databases for MongoDB [API documentation](https://developers.scaleway.com/en/products/mongodb/api/)
+
+## Example Usage
+
+```hcl
+# Get info by name
+data "scaleway_mongodb_instance" "my_instance" {
+  name = "foobar"
+}
+
+# Get info by instance ID
+data "scaleway_mongodb_instance" "my_instance" {
+  instance_id = "11111111-1111-1111-1111-111111111111"
+}
+
+# Get other attributes
+output "mongodb_version" {
+  description = "Version of the MongoDB instance"
+  value = data.scaleway_mongodb_instance.my_instance.version
+}
+```
+
+## Argument Reference
+
+- `name` - (Optional) The name of the MongoDB instance.
+
+- `instance_id` - (Optional) The MongoDB instance ID.
+
+  -> **Note** You must specify at least one: `name` or `instance_id`.
+
+- `project_id` - (Optional) The ID of the project the MongoDB instance is in. Can be used to filter instances when using `name`.
+
+- `region` - (Defaults to [provider](../index.md#region) `region`) The [region](../guides/regions_and_zones.md#zones) in which the MongoDB Instance exists.
+
+- `organization_id` - (Defaults to [provider](../index.md#organization_id) `organization_id`) The ID of the organization the MongoDB instance is in.
+
+## Attributes Reference
+
+In addition to all above arguments, the following attributes are exported:
+
+- `id` - The ID of the MongoDB Instance.
+- `name` - The name of the MongoDB instance.
+- `version` - The version of MongoDB running on the instance.
+- `node_type` - The type of MongoDB node.
+- `node_number` - The number of nodes in the MongoDB cluster.
+- `created_at` - The date and time the MongoDB instance was created.
+- `project_id` - The ID of the project the instance belongs to.
+- `tags` - A list of tags attached to the MongoDB instance.
+- `volume_type` - The type of volume attached to the MongoDB instance.
+- `volume_size_in_gb` - The size of the attached volume, in GB.
+- `public_network` - The details of the public network configuration, if applicable.
+
+## Import
+
+MongoDB™ instance can be imported using the `id`, e.g.
+
+```bash
+terraform import scaleway_mongodb_instance.main fr-par-1/11111111-1111-1111-1111-111111111111
+```

docs/resources/mongodb_instance.md

@@ -55,7 +55,7 @@ The following arguments are supported:
 
 ## Attributes Reference
 
-In addition to the arguments above, the following attributes are exported:
+In addition to all arguments above, the following attributes are exported:
 
 - `id` - The ID of the MongoDB instance.
 - `created_at` - The date and time of the creation of the MongoDB instance.