docs: Add LMCache in vLLM README.md (#2462)

Signed-off-by: ZichengMa <zichengma1225@gmail.com>

components/backends/vllm/README.md

@@ -41,6 +41,7 @@ git checkout $(git describe --tags $(git rev-list --tags --max-count=1))
 | [**SLA-Based Planner**](../../../docs/architecture/sla_planner.md) | ✅ |  |
 | [**Load Based Planner**](../../../docs/architecture/load_planner.md) | 🚧 | WIP |
 | [**KVBM**](../../../docs/architecture/kvbm_architecture.md) | 🚧 | WIP |
+| [**LMCache**](./LMCache_Integration.md) | ✅ |  |
 
 ### Large Scale P/D and WideEP Features
 

components/backends/vllm/src/dynamo/vllm/main.py

@@ -132,7 +132,6 @@ async def init_prefill(runtime: DistributedRuntime, config: Config):
     """
     Instantiate and serve
     """
-
     component = runtime.namespace(config.namespace).component(config.component)
     await component.create_service()