[HiCache] doc: update deployment in readme (#10332)

Signed-off-by: Teng Ma <sima.mt@alibaba-inc.com>

python/sglang/srt/mem_cache/storage/mooncake_store/README.md

@@ -54,7 +54,10 @@ When integrated with **SGLang**, the system conceptually consists of four key co
 
 ### Single Server Deployment
 
-**Launch Mooncake `metadata service`:**
+There are four components for deploying Mooncake: metadata service, master service, store service and sglang instance.
+Note: *Only **master service** is mandatory for single server deployment.*
+
+**Launch Mooncake `metadata service`(Optional):**
 
 ```bash
 python -m mooncake.http_metadata_server
@@ -66,6 +69,11 @@ python -m mooncake.http_metadata_server
 mooncake_master
 ```
 
+To start both the metadata and master services together:
+```bash
+mooncake_master --enable_http_metadata_server=true
+```
+
 **Launch Mooncake `store service`:**
 
 First, create and save a configuration file in JSON format. For example: