Update graceful shutdown docs

docs/advanced-usage/2-graceful-shutdown.md

@@ -5,7 +5,7 @@ weight: 2
 
 Stopping consumers is very useful if you want to ensure you don't kill a process halfway through processing a consumed message.
 
-Starting from version `1.12.x` of this package, consumers automatically listen to the `SIGTERM` and `SIQUIT` signals, which means you can easily stop your consumers using those signals.
+Starting from version `1.12.x` of this package, consumers automatically listen to the `SIGTERM`, `SIGINT` and `SIQUIT` signals, which means you can easily stop your consumers using those signals.
 
 ### Running callbacks when the consumer stops
 If your app requires that you run sum sort of processing when the consumers stop processing messages, you can use the `onStopConsume` method, available on the `\Junges\Kafka\Contracts\CanConsumeMessages` interface. This method accepts a `Closure` that will run once your consumer stops consuming.