Add a link to the AlphaFold 2 repository.

PiperOrigin-RevId: 384963402

Author: Augustin-Zidek

alphafold_casp13/README.md

@@ -2,8 +2,9 @@
 
 This package provides an implementation of the contact prediction network used
 in AlphaFold 1, associated model weights and CASP13 dataset as used for CASP13
-(2018) and published in Nature. This is completely different code from that used
-in AlphaFold 2 which was used in CASP14 (2020).
+(2018) and published in Nature. **This is completely different code from that
+used in AlphaFold 2 which was used in CASP14 (2020). You can find AlphaFold 2 at
+https://github.com/deepmind/alphafold.**
 
 Any publication that discloses findings arising from using this source code must
 cite *Improved protein structure prediction using potentials from deep learning*