Missing SENTRY_KAFKA_BROKERS_SPANS config for vroom

Author: aldy505

develop-docs/self-hosted/experimental/external-kafka.mdx

@@ -92,6 +92,7 @@ vroom:
     # ...
     SENTRY_KAFKA_BROKERS_PROFILING: "kafka-node1:9092,kafka-node2:9092,kafka-node3:9092"
     SENTRY_KAFKA_BROKERS_OCCURRENCES: "kafka-node1:9092,kafka-node2:9092,kafka-node3:9092"
+    SENTRY_KAFKA_BROKERS_SPANS: "kafka-node1:9092,kafka-node2:9092,kafka-node3:9092"
 ```
 
 When [vroom#530](https://github.com/getsentry/vroom/pull/530) is merged, you can use authentication. You will need to modify your `docker-compose.yml` file like so:
@@ -103,6 +104,7 @@ vroom:
     # ...
     SENTRY_KAFKA_BROKERS_PROFILING: "kafka-node1:9092,kafka-node2:9092,kafka-node3:9092"
     SENTRY_KAFKA_BROKERS_OCCURRENCES: "kafka-node1:9092,kafka-node2:9092,kafka-node3:9092"
+    SENTRY_KAFKA_BROKERS_SPANS: "kafka-node1:9092,kafka-node2:9092,kafka-node3:9092"
     SENTRY_KAFKA_SECURITY_PROTOCOL: "plaintext" # Valid options are PLAINTEXT, SSL, SASL_PLAINTEXT, SASL_SSL
     SENTRY_KAFKA_SSL_CA_PATH: ""
     SENTRY_KAFKA_SSL_CERT_PATH: ""