Update generate-profiles.yaml

tests/docker-compose/generate-profiles.yaml

@@ -1,8 +1,12 @@
 input:
+  # Use the 'generate' input
+  # https://docs.redpanda.com/redpanda-connect/components/inputs/generate/
   generate:
     # The interval at which new records are generated.
     interval: 1s
     # The mapping section defines how each generated record is structured.
+    # The language used here is called Bloblang.
+    # https://docs.redpanda.com/redpanda-connect/guides/bloblang/about/
     mapping: |
       # Generate a fake first name using the 'first_name' faker function.
       let first_name = fake("first_name")
@@ -55,6 +59,8 @@ pipeline:
         # Assign the entire record (root) to be sent to the specified topic.
         root = this
 output:
+  # Use the 'kafka_franz' output to send the result back to Redpanda
+  # https://docs.redpanda.com/redpanda-connect/components/outputs/kafka_franz/
   kafka_franz:
     # Define the list of seed brokers for the Kafka cluster.
     seed_brokers: [ "localhost:19092", "localhost:29092", "localhost:39092"]