Update README.md

Add link to the arxiv paper in order to Hugging Face Hub extract the arXiv ID and include it in the repository’s tags.

README.md

@@ -287,6 +287,8 @@ Please include a citation to the following article if you use the FLAIR dataset:
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+Link to the paper : https://arxiv.org/abs/2310.13336
+
 ## Acknowledgment
 <hr style='margin-top:-1em; margin-bottom:0' />
 This work was performed using HPC/AI resources from GENCI-IDRIS (Grant 2022-A0131013803). This work was supported by the project "Copernicus / FPCUP” of the European Union, by the French Space Agency (CNES) and by Connect by CNES.<br>