rector-symfony README.md refers only to ``Rector\Symfony\Set\SymfonySetList``

[Mynyx]

The README.md in rector-symfony refers to the old Rector\Symfony\Set\SymfonySetList.

In contrast, the README.md of the package rector/rector-doctrine already contains a revised note:

To add a set to your config, use ->withPreparedSets method, and pick one of constants:
...
If you're on PHP 7.x, you can use withSets() instead, for doctrineCodeQuality set, so you can define:
...

[samsonasik]

Feel free to create PR for it, thank you :)