Update README.md

README.md

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 |Starlight|To Eun Kim, Fernando Diaz|[LTRR: Learning To Rank Retrievers for LLMs](https://arxiv.org/abs/2506.13743)|
 |emorag|Chase Fensore, Kaustubh Dhole, Joyce Ho, Eugene Agichtein|[Evaluating Hybrid Retrieval Augmented Generation using Dynamic Test Sets: LiveRAG Challenge](SIGIR_2025_LiveRAG-Workshop_2664.pdf)|
 |TopClustRAG|Juli Bakagianni, John Pavlopoulos, Aristidis Likas|[TopClustRAG at SIGIR 2025 LiveRAG Challenge](https://arxiv.org/abs/2506.15246)|
-|Graph-Enhanced RAG|Zhili Shen, Chenxin Diao, Pascual Merita, Pavlos Vougiouklis, Jeff Pan|[Millions of GeAR-s: Extending GraphRAG to Millions of Documents](SIGIR_2025_LiveRAG-Workshop_2671.pdf)|
+|Graph-Enhanced RAG|Zhili Shen, Chenxin Diao, Pascual Merita, Pavlos Vougiouklis, Jeff Pan|[Millions of GeAR-s: Extending GraphRAG to Millions of Documents](https://arxiv.org/abs/2507.17399)|