Fix enabling torch profiler in openai chat backend

Signed-off-by: Wang Huaqiang <[email protected]>

benchmarks/backend_request_func.py

@@ -308,8 +308,9 @@ async def async_request_openai_chat_completions(
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
     assert api_url.endswith(
-        "chat/completions"
-    ), "OpenAI Chat Completions API URL must end with 'chat/completions'."
+        ("chat/completions", "profile")
+    ), ("OpenAI Chat Completions API URL must end with 'chat/completions'"
+        " or 'profile'.")
 
     async with aiohttp.ClientSession(timeout=AIOHTTP_TIMEOUT) as session:
         content = [{"type": "text", "text": request_func_input.prompt}]