[12.x] Consistency with Laravel's best practices

[AhmedAlaa4611]

Problem:
The explicit using for use App\Http\Controllers\Controller; in Laravel controllers is unnecessary when the base controller Controller.php is in the same namespace. Since Laravel's artisan make:controller command does not include this import, and Laravel Pint also removes it, it makes sense to align the documentation with this convention.

Reasons:

• The import statement is redundant because the base Controller is in the same namespace.
• Laravel's artisan command does not generate this import.
• Laravel Pint removes it as an unnecessary statement.

Updating the documentation will ensure consistency with Laravel's best practices.