update readme and paper name

README.md

@@ -10,7 +10,7 @@ Mistral-Plus is a chat assistant trained by Reinforcement Learning from Human Fe
 
 ## Model Sources
 
-__Paper (Mistral-Plus):__ https://arxiv.org/abs/2401.02072
+__Paper (Mistral-Plus):__ https://arxiv.org/abs/2403.02513
 
 ## Uses