Update README.md

Author: mcopik

README.md

@@ -29,7 +29,7 @@ can be [installed locally](#installation).
 ### Paper
 
 When using SeBS, please cite our [Middleware '21 paper](https://dl.acm.org/doi/abs/10.1145/3464298.3476133).
-An extended version of our paper is [available on arXiv](https://arxiv.org/abs/2012.15592), and you can
+An extended version of our paper is [available on arXiv](https://arxiv.org/abs/2012.14132), and you can
 find more details about research work [in this paper summary](https://mcopik.github.io/projects/sebs/).
 You can cite our software repository as well, using the citation button on the right.