PHPDoc: Undefined method 'libraryNameSuffix' (intelephense)

Problem/Motivation

Super-minor bugfix, see MR.

[{
	"resource": "/var/www/html/web/modules/custom/asset_injector/asset_injector.module",
	"owner": "_generated_diagnostic_collection_name_#1",
	"code": "1013",
	"severity": 8,
	"message": "Undefined method 'libraryNameSuffix'.",
	"source": "intelephense",
	"startLineNumber": 124,
	"startColumn": 74,
	"endLineNumber": 124,
	"endColumn": 91
}]

/** @var \Drupal\Core\Asset\AttachedAssetsInterface $asset */
  foreach (asset_injector_get_assets(TRUE) as $asset) {
    $attachments['#attached']['library'][] = 'asset_injector/' . $asset->libraryNameSuffix();
    $renderer->addCacheableDependency($attachments, $asset);
  }

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes