Update README.md

Author: louie-tsai

ChatQnA/docker_compose/intel/cpu/xeon/README.md

@@ -279,7 +279,7 @@ If use TGI as the LLM serving backend.
 
 ```bash
 docker compose -f compose_tgi.yaml up -d
-# Start ChatQnA with Rerank Pipeline and Open Telemetry Tracing
+# Start ChatQnA with Open Telemetry Tracing
 docker compose -f compose_tgi.yaml -f compose_tgi_telemetry.yaml up -d 
 ```