[Console] Fix wrong method name to add a command to an application

Author: Nek-

components/console.rst

@@ -43,10 +43,10 @@ First, you need to create a PHP script to define the console application::
     $application->run();
 
 Then, you can register the commands using
-:method:`Symfony\\Component\\Console\\Application::add`::
+:method:`Symfony\\Component\\Console\\Application::addCommand`::
 
     // ...
-    $application->add(new GenerateAdminCommand());
+    $application->addCommand(new GenerateAdminCommand());
 
 You can also register inline commands and define their behavior thanks to the
 ``Command::setCode()`` method::