Apply Ruff to main.py

src/reachy_mini_conversation_demo/main.py

@@ -37,10 +37,12 @@ def main():
         logger.warning("Head tracking is not activated due to --no-camera.")
 
     robot = ReachyMini()
-    
+
     # Check if running in simulation mode without --gradio
     if robot.client.get_status()["simulation_enabled"] and not args.gradio:
-        logger.error("Simulation mode requires Gradio interface. Please use --gradio flag when running in simulation mode.")
+        logger.error(
+            "Simulation mode requires Gradio interface. Please use --gradio flag when running in simulation mode."
+        )
         robot.client.disconnect()
         sys.exit(1)