Update README.md

[drusso98]

I've included two papers from my research group on the topic of Justification Production:

• Benchmarking the Generation of Fact Checking Explanations (Russo et al., TACL 2023)
• Countering Misinformation via Emotional Response Generation (Russo et al., EMNLP 2023)

[StevenACoffman]

@Cartus Is this Open repository open for outside contributions?

@drusso98 Have you found any other similarly maintained collections of research resources (specifically collaborating on GitHub or a similar platform)?