Update README.md

fix: redundant python for vllm deployment.

README.md

@@ -315,7 +315,7 @@ Documentation on installing and using vLLM [can be found here](https://vllm.read
 ### Using vLLM as a server ###
 When using vLLM as a server, pass the --model amazon/MistralLite parameter, for example:
 ```shell
-python3 python -m vllm.entrypoints.api_server --model amazon/MistralLite
+python3 -m vllm.entrypoints.api_server --model amazon/MistralLite
 ```
 
 ### Using vLLM in Python Code ###