Fix indentation of asgi instrumentation example

Author: andremm

instrumentation/opentelemetry-instrumentation-asgi/src/opentelemetry/instrumentation/asgi/__init__.py

@@ -111,7 +111,7 @@ def client_response_hook(span: Span, scope: dict[str, Any], message: dict[str, A
         if span and span.is_recording():
             span.set_attribute("custom_user_attribute_from_response_hook", "some-value")
 
-   OpenTelemetryMiddleware(application, server_request_hook=server_request_hook, client_request_hook=client_request_hook, client_response_hook=client_response_hook)
+    OpenTelemetryMiddleware(application, server_request_hook=server_request_hook, client_request_hook=client_request_hook, client_response_hook=client_response_hook)
 
 Capture HTTP request and response headers
 *****************************************