portal/routes/document.php

<?php

use Illuminate\Support\Facades\Route;

Route::group(['prefix' => 'document', 'as' => 'document.', 'namespace' => 'Documents'], function () {
    Route::get('/list', 'ListDocumentsController@list')->name('list');
    Route::put('/approve/{id}', 'ApproveDocumentController@approve')->name('approve');
});