[Docs] Adapt Observability Quickstart Guide for bind.listeners config option

Author: michaelkoepf

website/docs/maintenance/observability/quickstart.md

@@ -107,7 +107,7 @@ services:
       - |
         FLUSS_PROPERTIES=
         zookeeper.address: zookeeper:2181
-        coordinator.host: coordinator-server
+        bind.listeners: FLUSS://coordinator-server:9123
         remote.data.dir: /tmp/fluss/remote-data
         datalake.format: paimon
         datalake.paimon.metastore: filesystem
@@ -129,7 +129,7 @@ services:
       - |
         FLUSS_PROPERTIES=
         zookeeper.address: zookeeper:2181
-        tablet-server.host: tablet-server
+        bind.listeners: FLUSS://tablet-server:9123
         data.dir: /tmp/fluss/data
         remote.data.dir: /tmp/fluss/remote-data
         kv.snapshot.interval: 0s