[DSM] Fix referrer link (#20391)

Author: lkretvix

kafka/assets/dashboards/kafka_dashboard.json

@@ -46,7 +46,7 @@
             "id": 7914240170882312,
             "definition": {
               "type": "note",
-              "content": "**Useful Links**\n\n* [Kafka Integration Doc](https://docs.datadoghq.com/integrations/kafka/?tab=host)\n* [Kafka Blog by Datadog](https://www.datadoghq.com/blog/monitor-kafka-with-datadog/)\n* [ZooKeeper Integration Doc](https://docs.datadoghq.com/integrations/zk/?tab=host)\n* [Data Streams Monitoring](https://docs.datadoghq.com/data_streams/setup/technologies/kafka/?referrer=kafka/)",
+              "content": "**Useful Links**\n\n* [Kafka Integration Doc](https://docs.datadoghq.com/integrations/kafka/?tab=host)\n* [Kafka Blog by Datadog](https://www.datadoghq.com/blog/monitor-kafka-with-datadog/)\n* [ZooKeeper Integration Doc](https://docs.datadoghq.com/integrations/zk/?tab=host)\n* [Data Streams Monitoring](https://docs.datadoghq.com/data_streams/setup/technologies/kafka/?referrer=kafka)",
               "background_color": "white",
               "font_size": "16",
               "text_align": "left",