added missing parameter documentation

apps/files_versions/lib/versions.php

@@ -566,6 +566,7 @@ class Storage {
 	/**
 	 * @brief create recursively missing directories
 	 * @param string $filename $path to a file
+	 * @param \OC\Files\View $view view on data/user/
 	 */
 	private static function createMissingDirectories($filename, $view) {
 		$dirname = \OC_Filesystem::normalizePath(pathinfo($filename, PATHINFO_DIRNAME));