Update papers.csv

Update papers.csv to include link and HF paper page for paper `Principled Reinforcement Learning with Human Feedback from Pairwise or K-wise Comparisons'.

papers.csv

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:340c88e27ad248e8efa0fdc2559c88cbad68985df932a65ba19a97a54bd47590
-size 358999
+oid sha256:ffee4c162636b30f595c0c6bb824dac1788d4fb26655f5f0040a8c814ef7f6ac
+size 360936