refactor(docs): remove duplicate util func to format possible values (#1050)

docs/data-sources/cdn_distribution.md

@@ -61,7 +61,7 @@ Read-Only:
 - `geofencing` (Map of List of String) A map of URLs to a list of countries where content is allowed.
 - `origin_request_headers` (Map of String) The configured origin request headers for the backend
 - `origin_url` (String) The configured backend type for the distribution
-- `type` (String) The configured backend type. Supported values are: `http`.
+- `type` (String) The configured backend type. Possible values are: `http`.
 
 
 <a id="nestedatt--config--optimizer"></a>

docs/data-sources/network_interface.md

@@ -40,4 +40,4 @@ data "stackit_network_interface" "example" {
 - `name` (String) The name of the network interface.
 - `security` (Boolean) The Network Interface Security. If set to false, then no security groups will apply to this network interface.
 - `security_group_ids` (List of String) The list of security group UUIDs. If security is set to false, setting this field will lead to an error.
-- `type` (String) Type of network interface. Some of the possible values are: Supported values are: `server`, `metadata`, `gateway`.
+- `type` (String) Type of network interface. Some of the possible values are: Possible values are: `server`, `metadata`, `gateway`.

docs/data-sources/security_group_rule.md

@@ -32,7 +32,7 @@ data "stackit_security_group_rule" "example" {
 ### Read-Only
 
 - `description` (String) The description of the security group rule.
-- `direction` (String) The direction of the traffic which the rule should match. Some of the possible values are: Supported values are: `ingress`, `egress`.
+- `direction` (String) The direction of the traffic which the rule should match. Some of the possible values are: Possible values are: `ingress`, `egress`.
 - `ether_type` (String) The ethertype which the rule should match.
 - `icmp_parameters` (Attributes) ICMP Parameters. (see [below for nested schema](#nestedatt--icmp_parameters))
 - `id` (String) Terraform's internal datasource ID. It is structured as "`project_id`,`security_group_id`,`security_group_rule_id`".

docs/data-sources/volume.md

@@ -45,4 +45,4 @@ data "stackit_volume" "example" {
 Read-Only:
 
 - `id` (String) The ID of the source, e.g. image ID
-- `type` (String) The type of the source. Supported values are: `volume`, `image`, `snapshot`, `backup`.
+- `type` (String) The type of the source. Possible values are: `volume`, `image`, `snapshot`, `backup`.