fix vllm deployment

docs/deploy_guidance.md

@@ -11,7 +11,7 @@ Here is the example to serve this model on a H200 single node via vLLM:
 
 1. pull the Docker image.
 ```bash
-docker pull jdopensource/joyai-llm-vllm:v0.13.0-joyai_llm_flash
+docker pull jdopensource/joyai-llm-vllm:v0.15.1-joyai_llm_flash
 ```
 2. launch JoyAI-LLM Flash model with dense MTP.
 ```bash