fix links

Author: peitek

index.html

@@ -172,7 +172,6 @@ <h3>Correlates of Programmer Efficacy and their Link to Experience: A Combined E
                 </summary>
                 <h4>Resources</h4>
                 <ul class="resources">
-                    <li><a href="https://github.com/brains-on-code/fMRI-complexity-metrics-icse2021">Replication Package</a></li>
                 </ul>
             </article>
 
@@ -197,6 +196,7 @@ <h3>Program Comprehension and Code Complexity Metrics: An fMRI Study (ICSE 21)</
                 </summary>
                 <h4>Resources</h4>
                 <ul class="resources">
+                    <li><a href="https://www.se.cs.uni-saarland.de/publications/docs/PAP+21.pdf">Paper, PDF</a></li>
                     <li><a href="https://github.com/brains-on-code/fMRI-complexity-metrics-icse2021">Replication Package</a></li>
                 </ul>
             </article>