Update README.md

Author: AdalbertoCq

README.md

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 # Learning a low dimensional manifold of real cancer tissue with Pathology-GAN
-* **[Quiros A.C., Murray-Smith R., Yuan K. 'Learning a low dimensional manifold of real cancer tissue with PathologyGAN'. 2020](https://arxiv.org/abs/2004.06517)** 
+* **[Quiros A.C., Murray-Smith R., Yuan K. Learning a low dimensional manifold of real cancer tissue with PathologyGAN. 2020](https://arxiv.org/abs/2004.06517)** 
 
 
 **Abstract:**