fixed ruff lint

Author: XyLearningProgramming

slm_server/trace.py

@@ -14,13 +14,16 @@
 
 logger = logging.getLogger(__name__)
 
+
 def setup_tracing(app: FastAPI, settings: TraceSettings) -> None:
     """Initialize OpenTelemetry tracing with optional Grafana Tempo export."""
     if not settings.enabled:
         return
-    
+
     if not settings.endpoint or not settings.username or not settings.password:
-        logger.warning("Grafana Tempo endpoint or credentials are not configured, skipping tracing setup")
+        logger.warning(
+            "Grafana Tempo endpoint or credentials are not configured, skipping tracing setup"
+        )
         return
 
     # Define your service name in a Resource