Update README.md

update sglang deploy cmd

README.md

@@ -221,12 +221,10 @@ pip install "sglang[all] @ git+https://github.com/sgl-project/sglang.git"
 ```
 
 2. Launch the server.
+  - For bf16 model
 
 ```bash
-  - For bf16 model
-SGLANG_ENABLE_SPEC_V2=1
-python3 -m sglang.launch_server \
-  --model-path <MODEL_PATH_OR_HF_ID> \
+sglang serve --model-path <MODEL_PATH_OR_HF_ID> \
   --served-model-name step3p5-flash \
   --tp-size 8 \
   --tool-call-parser step3p5 \
@@ -241,9 +239,7 @@ python3 -m sglang.launch_server \
 ```
   - For fp8 model
 ```bash
-SGLANG_ENABLE_SPEC_V2=1
-python3 -m sglang.launch_server \
-  --model-path <MODEL_PATH_OR_HF_ID> \
+sglang serve --model-path <MODEL_PATH_OR_HF_ID> \
   --served-model-name step3p5-flash \
   --tp-size 8 \
   --ep-size 8 \