Migration guide fix

Migration-6_1-8.md

@@ -9,8 +9,8 @@ Java API was **COMPLETELY REMOVED** and won't be supported anymore. Checkout ver
     * Init methods return [`cats.effect.Resource`](https://typelevel.org/cats-effect/datatypes/resource.html) for easy resource management.
     * Declaration methods return `F[Unit]`.
 1. Library could be configured with case classes - this is the default way. See [`RabbitMQConnection.make`](core/src/main/scala/com/avast/clients/rabbitmq/RabbitMQConnection.scala#L73).
-1. Configuration from [Lightbend `Config`](https://github.com/lightbend/config) was separated to [`pureconfig`](pureconfig) module. It's
-behavior remained backward compatible with these exceptions:
+1. Configuration from [Lightbend `Config`](https://github.com/lightbend/config) was separated to [`pureconfig`](pureconfig) module. Please read
+ the docs. It's behavior remained backward compatible with these exceptions:
     * SSL context is now passed explicitly and is **ignored** in `Config` (see more below).
     * **You have to use `import com.avast.clients.rabbitmq.pureconfig._` to be able to use `fromConfig` method!**
     * **Required structure of config has been changed** - all consumers must be in `consumers` block, producers in `producers` and additional
@@ -26,4 +26,5 @@ SSL without custom (key|trust)store; it's now disabled by default (`None`)!
 
 ---
 
-The client now uses circe 0.11, cats 2+ and cats-effect 2+ (doesn't use Monix anymore).
+The client now uses circe 0.13 (only [extras-circe module](extras-circe)), cactus 0.17 (only [extras-cactus module](extras-cactus)),
+cats 2+ and cats-effect 2+ - it doesn't use Monix anymore!.