Fix comment style

Author: dbobrenko

prompting/llms/vllm_llm.py

@@ -190,7 +190,7 @@ def unload_model(self):
             if hasattr(self.model, "llm_engine") and hasattr(self.model.llm_engine, "driver_worker"):
                 del self.model.llm_engine.driver_worker
             else:
-                logger.warning("Attribute 'driver_worker' not found or accessible during unload.")
+                logger.warning("Attribute 'driver_worker' not found or accessible during unload")
 
             destroy_model_parallel()
             self.model = None