Fix link (DataDog#21804)

Author: estherk15

kafka/README.md

@@ -162,7 +162,7 @@ See [service_checks.json][15] for a list of service checks provided by this inte
 
 [1]: https://raw.githubusercontent.com/DataDog/integrations-core/master/kafka/images/kafka_dashboard.png
 [2]: https://docs.datadoghq.com/integrations/java/
-[3]: https://docs.datadoghq.com/integrations/kafka/?tab=host#kafka-consumer-integration
+[3]: https://docs.datadoghq.com/integrations/kafka-consumer/
 [4]: /account/settings/agent/latest
 [5]: https://github.com/DataDog/jmxfetch
 [6]: https://docs.datadoghq.com/integrations/amazon_msk/#pagetitle