Update arXiv citation

Author: lucas-ventura

README.md

@@ -199,10 +199,10 @@ There are many pre-defined experiments from the paper in ``configs/experiments``
 If you use this dataset and/or this code in your work, please cite our [paper](htto://TODO):
 
 ```markdown
-@inproceedings{ventura23covr,
+@article{ventura23covr,
     title     = {{CoVR}: Learning Composed Video Retrieval from Web Video Captions},
     author    = {Lucas Ventura and Antoine Yang and Cordelia Schmid and G{\"u}l Varol},
-    booktitle = {arXiv:2308.14746},
+    journal = {arXiv:2308.14746},
     year      = {2023}
   }
 ```