chore: run make docs

docs/resources/server.md

@@ -79,7 +79,9 @@ resource "upcloud_server" "example" {
 - `login` (Block Set, Max: 1) Configure access credentials to the server (see [below for nested schema](#nestedblock--login))
 - `network_interface` (Block List, Min: 1) One or more blocks describing the network interfaces of the server.
 
-    In addition to list order, the configured network interfaces are matched to the server's actual network interfaces by `index` and `ip_address` fields. This is to avoid public and utility network interfaces being re-assigned when the server is updated. This might result to inaccurate diffs in the plan, when interfaces are re-ordered or when interface is removed from the middle of the list. (see [below for nested schema](#nestedblock--network_interface))
+    In addition to list order, the configured network interfaces are matched to the server's actual network interfaces by `index` and `ip_address` fields. This is to avoid public and utility network interfaces being re-assigned when the server is updated. This might result to inaccurate diffs in the plan, when interfaces are re-ordered or when interface is removed from the middle of the list.
+
+    We recommend explicitly setting the value for `index` in configuration, when re-ordering interfaces or when removing interface from middle of the list. (see [below for nested schema](#nestedblock--network_interface))
 - `simple_backup` (Block Set, Max: 1) Simple backup schedule configuration
 
     The simple backups provide a simplified way to back up *all* of the storages attached to a given server. This means you cannot have simple backup set for a server, and individual `backup_rules` on the storages attached to the server. Such configuration will throw an error during execution. This also applies to `backup_rules` defined for server templates.