Solve small bug in the kg prompt (#1988)

I think that the 'Person' line should be under 'Last line of
conversation' as is the case in the other examples in the kg prompt

langchain/memory/prompt.py

@@ -148,8 +148,8 @@ _DEFAULT_KNOWLEDGE_TRIPLE_EXTRACTION_TEMPLATE = (
     "AI: Descartes was a French philosopher, mathematician, and scientist who lived in the 17th century.\n"
     "Person #1: The Descartes I'm referring to is a standup comedian and interior designer from Montreal.\n"
     "AI: Oh yes, He is a comedian and an interior designer. He has been in the industry for 30 years. His favorite food is baked bean pie.\n"
-    "Person #1: Oh huh. I know Descartes likes to drive antique scooters and play the mandolin.\n"
     "Last line of conversation:\n"
+    "Person #1: Oh huh. I know Descartes likes to drive antique scooters and play the mandolin.\n"
     f"Output: (Descartes, likes to drive, antique scooters){KG_TRIPLE_DELIMITER}(Descartes, plays, mandolin)\n"
     "END OF EXAMPLE\n\n"
     "Conversation history (for reference only):\n"