fix: remove identity from postgres-flex

[skip ci]

docs/data-sources/postgresflexalpha_database.md

@@ -28,6 +28,9 @@ data "stackitprivatepreview_postgresflexalpha_database" "example" {
 - `database_id` (Number) The ID of the database.
 - `instance_id` (String) The ID of the instance.
 - `project_id` (String) The STACKIT project ID.
+
+### Optional
+
 - `region` (String) The region which should be addressed
 
 ### Read-Only

docs/data-sources/postgresflexalpha_instance.md

@@ -26,6 +26,9 @@ data "stackitprivatepreview_postgresflexalpha_instance" "example" {
 
 - `instance_id` (String) The ID of the instance.
 - `project_id` (String) The STACKIT project ID.
+
+### Optional
+
 - `region` (String) The region which should be addressed
 
 ### Read-Only
@@ -37,6 +40,7 @@ data "stackitprivatepreview_postgresflexalpha_instance" "example" {
 
 ⚠︝ **Note:** This feature is in private preview. Supplying this object is only permitted for enabled accounts. If your account does not have access, the request will be rejected. (see [below for nested schema](#nestedatt--encryption))
 - `flavor_id` (String) The id of the instance flavor.
+- `id` (String) internal ID
 - `is_deletable` (Boolean) Whether the instance can be deleted or not.
 - `name` (String) The name of the instance.
 - `network` (Attributes) The access configuration of the instance (see [below for nested schema](#nestedatt--network))

docs/data-sources/postgresflexalpha_user.md

@@ -27,12 +27,12 @@ data "stackitprivatepreview_postgresflexalpha_user" "example" {
 
 - `instance_id` (String) The ID of the instance.
 - `project_id` (String) The STACKIT project ID.
-- `region` (String) The region which should be addressed
 - `user_id` (Number) The ID of the user.
 
 ### Optional
 
 - `id` (String) Terraform's internal resource ID. It is structured as \"`project_id`,`region`,`instance_id`,`user_id`\".",
+- `region` (String) The region which should be addressed
 
 ### Read-Only