Fix: fix imports and names (#9)

* fix: add missing entries and correct refs

* fix: add missing docs

---------

Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

docs/data-sources/postgresflexalpha_user.md

@@ -0,0 +1,46 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "stackitprivatepreview_postgresflexalpha_user Data Source - stackitprivatepreview"
+subcategory: ""
+description: |-
+  Postgres Flex user data source schema. Must have a region specified in the provider configuration.
+---
+
+# stackitprivatepreview_postgresflexalpha_user (Data Source)
+
+Postgres Flex user data source schema. Must have a `region` specified in the provider configuration.
+
+## Example Usage
+
+```terraform
+# Copyright (c) STACKIT
+
+data "stackitprivatepreview_postgresflexalpha_user" "example" {
+  project_id  = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+  instance_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+  user_id     = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `instance_id` (String) ID of the PostgresFlex instance.
+- `project_id` (String) STACKIT project ID to which the instance is associated.
+- `user_id` (String) User ID.
+
+### Optional
+
+- `region` (String) The resource region. If not defined, the provider region is used.
+
+### Read-Only
+
+- `connection_string` (String)
+- `host` (String)
+- `id` (String) Terraform's internal data source. ID. It is structured as "`project_id`,`region`,`instance_id`,`user_id`".
+- `port` (Number)
+- `roles` (Set of String)
+- `status` (String)
+- `username` (String)

docs/resources/postgresflexalpha_user.md

@@ -0,0 +1,55 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "stackitprivatepreview_postgresflexalpha_user Resource - stackitprivatepreview"
+subcategory: ""
+description: |-
+  Postgres Flex user resource schema. Must have a region specified in the provider configuration.
+---
+
+# stackitprivatepreview_postgresflexalpha_user (Resource)
+
+Postgres Flex user resource schema. Must have a `region` specified in the provider configuration.
+
+## Example Usage
+
+```terraform
+# Copyright (c) STACKIT
+
+resource "stackitprivatepreview_postgresflexalpha_user" "example" {
+  project_id  = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+  instance_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+  username    = "username"
+  roles       = ["role"]
+}
+
+# Only use the import statement, if you want to import an existing postgresflex user
+import {
+  to = stackitprivatepreview_postgresflexalpha_user.import-example
+  id = "${var.project_id},${var.region},${var.postgres_instance_id},${var.user_id}"
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `instance_id` (String) ID of the PostgresFlex instance.
+- `project_id` (String) STACKIT project ID to which the instance is associated.
+- `roles` (Set of String) Database access levels for the user. Possible values are: `login`, `createdb`.
+- `username` (String)
+
+### Optional
+
+- `region` (String) The resource region. If not defined, the provider region is used.
+
+### Read-Only
+
+- `connection_string` (String)
+- `host` (String)
+- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`,`region`,`instance_id`,`user_id`".
+- `password` (String, Sensitive)
+- `port` (Number)
+- `status` (String)
+- `uri` (String, Sensitive)
+- `user_id` (String) User ID.