Fix format

Author: Hoa Lam

examples/servers/simple-tool/mcp_simple_tool/server.py

@@ -60,8 +60,8 @@ async def list_tools() -> list[types.Tool]:
     if transport == "sse":
         from mcp.server.sse import SseServerTransport
         from starlette.applications import Starlette
-        from starlette.routing import Mount, Route
         from starlette.responses import Response
+        from starlette.routing import Mount, Route
 
         sse = SseServerTransport("/messages/")
         async def handle_sse(request):