Update wasmedge-kafka-mysql/README.md

Signed-off-by: Michael Yuan <michael@michaelyuan.com>

Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>
Signed-off-by: Michael Yuan <michael@michaelyuan.com>
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@ -73,7 +73,7 @@ services:
MYSQL_ROOT_PASSWORD: whalehello
```
The compose file defines an application with three services `redpanda`, `etl` and `db`. The `redpanda` is a Kafka-compatible messaging server that produces messages in a queue topic. The `etl` service, in the WasmEdge container, subscribes to the queue topic and receives incoming messages. Each incoming message is parsed and stored in the `db` MySQL database server.
The compose file defines an application with three services `redpanda`, `etl` and `db`. The `redpanda` service is a Kafka-compatible messaging server that produces messages in a queue topic. The `etl` service, in the WasmEdge container that subscribes to the queue topic and receives incoming messages. Each incoming message is parsed and stored in the `db` MySQL (MariaDB) database server.
## Deploy with docker compose