a-ha, found it! `ruleSets` is now gone, the right ...

# detekt

[themishkun]

a-ha, found it! ruleSets is now gone, the right property is plugins. the docs here https://arturbosch.github.io/detekt/groovydsl.html#options-for-detekt-configuration-closure are outdated

[Artur Bosch]

thanks for reporting, I have fixed it 🙂