Update standalone-for-python.md (#3501)

Fix configure method name

Author: luisquintanilla

docs/fundamentals/dashboard/standalone-for-python.md

@@ -168,7 +168,7 @@ To use the .NET Aspire dashboard with your Python app, you need to install the O
     from otlp_tracing import configure_otel_otlp
 
     logging.basicConfig(level=logging.INFO)
-    tracer = configure_otel_otlp()
+    tracer = configure_oltp_grpc_tracing()
     logger = logging.getLogger(__name__)
     ```