fix: fix sample code on README.md (#2312)

README.md

@@ -95,7 +95,7 @@ memory = Memory()
 def chat_with_memories(message: str, user_id: str = "default_user") -> str:
     # Retrieve relevant memories
     relevant_memories = memory.search(query=message, user_id=user_id, limit=3)
-    memories_str = "\n".join(f"- {entry['memory']}" for entry in relevant_memories)
+    memories_str = "\n".join(f"- {entry['memory']}" for entry in relevant_memories["results"])
     
     # Generate Assistant response
     system_prompt = f"You are a helpful AI. Answer the question based on query and memories.\nUser Memories:\n{memories_str}"