doc: add info about prefix-only modules to module.builtinModules

PR-URL: #53954
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

doc/api/module.md

@@ -28,6 +28,8 @@ added:
 A list of the names of all modules provided by Node.js. Can be used to verify
 if a module is maintained by a third party or not.
 
+Note: the list doesn't contain [prefix-only modules][] like `node:test`.
+
 `module` in this context isn't the same object that's provided
 by the [module wrapper][]. To access it, require the `Module` module:
 
@@ -1135,6 +1137,7 @@ returned object contains the following keys:
 [hooks]: #customization-hooks
 [load hook]: #loadurl-context-nextload
 [module wrapper]: modules.md#the-module-wrapper
+[prefix-only modules]: modules.md#built-in-modules-with-mandatory-node-prefix
 [realm]: https://tc39.es/ecma262/#realm
 [source map include directives]: https://sourcemaps.info/spec.html#h.lmz475t4mvbx
 [transferrable objects]: worker_threads.md#portpostmessagevalue-transferlist