Update doc to avoid bundle:controller:action and service:method controller syntax #9306
Description
With symfony/symfony#26085 coming with Symfony 4.1 the doc should not mention the deprecated syntax anymore. Most examples in the doc already use the FQCN::method syntax which is good. The parts I've found that should be updated are
If your controller is registered as a service, you can also use just one colon separator (e.g. service_name:index).