[DependencyInjection] Compiler pass bundle example does not implement CompilerPassInterface

[jennevdmeer]

Not much more to add.

symfony-docs/service_container/compiler_passes.rst

Lines 70 to 86 in 8b5773b

	If your compiler pass is relatively small, you can add it directly in the main
	bundle class. To do so, make your bundle implement the
	:class:`Symfony\\Component\\DependencyInjection\\Compiler\\CompilerPassInterface`
	and place the compiler pass code inside the ``process()`` method of the main
	bundle class::
	// src/MyBundle/MyBundle.php
	namespace App\MyBundle;
	use App\DependencyInjection\Compiler\CustomPass;
	use Symfony\Component\DependencyInjection\ContainerBuilder;
	use Symfony\Component\HttpKernel\Bundle\AbstractBundle;
	class MyBundle extends AbstractBundle
	{
	public function process(ContainerBuilder $container): void
	{

It adds the import/implements to this part.

[javiereguiluz]

Good catch, thanks Jenne.