[Doc]Fix - Align with repo. (#1176)

Signed-off-by: Alicia <115451386+congw729@users.noreply.github.com>

docs/user_guide/examples/online_serving/lora_inference.md

@@ -1,7 +1,8 @@
-# LoRA-Inference
+# Online LoRA Inference (Diffusion)
 
 Source <https://github.com/vllm-project/vllm-omni/tree/main/examples/online_serving/lora_inference>.
 
+
 This example shows how to use **per-request LoRA** with vLLM-Omni diffusion models via the OpenAI-compatible Chat Completions API.
 
 > Note: The LoRA adapter path must be readable on the **server** machine (usually a local path or a mounted directory).
@@ -55,15 +56,17 @@ lora_adapter/
 └── adapter_model.safetensors
 ```
 
+## Example materials
+
 ??? abstract "openai_chat_client.py"
     ``````py
     --8<-- "examples/online_serving/lora_inference/openai_chat_client.py"
     ``````
 ??? abstract "run_curl_lora_inference.sh"
-    ``````py
+    ``````sh
     --8<-- "examples/online_serving/lora_inference/run_curl_lora_inference.sh"
     ``````
 ??? abstract "run_server.sh"
-    ``````py
+    ``````sh
     --8<-- "examples/online_serving/lora_inference/run_server.sh"
     ``````