fix markdown error in README in main (#1147)

Author: ihrpr

README.md

@@ -950,13 +950,12 @@ By default, SSE servers are mounted at `/sse` and Streamable HTTP servers are mo
 The following example shows how to use `streamable_http_app()`, a method that returns a `Starlette` application object.
 You can then append additional routes to that application as needed.
 
-```
-from starlette.routing import Route
-
+```python
 mcp = FastMCP("My App")
 
 app = mcp.streamable_http_app()
 # Additional non-MCP routes can be added like so:
+# from starlette.routing import Route
 # app.router.routes.append(Route("/", endpoint=other_route_function))
 ```