Update README.md: remove `extra_body` in disabling thinking

README.md

@@ -199,7 +199,7 @@ python3 -m sglang.launch_server \
     }
     ```
     
-- When using `vLLM` and `SGLang`, thinking mode is enabled by default when sending requests. If you want to disable the thinking switch, you need to add the `extra_body={"chat_template_kwargs": {"enable_thinking": False}}` parameter.
+- When using `vLLM` and `SGLang`, thinking mode is enabled by default when sending requests. If you want to disable the thinking switch, you need to add the `"chat_template_kwargs": {"enable_thinking": False}` parameter.
 - Both support tool calling. Please use OpenAI-style tool description format for calls.