add credits

description.html

@@ -1,5 +1,5 @@
 <h2>Description</h2>
-<p>Issues Track: <ver.>_issues.bed<\p>
+<p>Issues Track: (ver.)_issues.bed<\p>
 
 <h2>Methods</h2>
 <p>
@@ -51,5 +51,5 @@ <h2>Contacts</h2>
 <li><a href="https://github.com/marbl/CHM13-issues">Please report any issues to https://github.com/marbl/CHM13-issues</a>
 </ul>
 <h2>Credits</h2>
-<p></p>
+<p>Please cite Mc Cartney AM, Shafin K, Alonge M et al. <a href="https://doi.org/10.1101/2021.07.02.450803">Chasing perfection: validation and polishing strategies for telomere-to-telomere genome assemblies.</a> bioRxiv (2021) doi: https://doi.org/10.1101/2021.07.02.450803</p>