Add dividers for years where archive has 2 devrooms

Author: atodorov

index.html

@@ -143,19 +143,19 @@ <h1><a name="archive" class="anchor" href="#archive"><span class="octicon octico
 <ul>
 <li><a href="https://fosdem.org/2024/schedule/track/testing-continuous-delivery/">2024</a></li>
 <li>
-    <a href="https://archive.fosdem.org/2023/schedule/track/testing_and_automation/">Testing and Automation 2023</a>
+    <a href="https://archive.fosdem.org/2023/schedule/track/testing_and_automation/">Testing and Automation 2023</a> |
     <a href="https://archive.fosdem.org/2023/schedule/track/continuous_integration_and_continuous_deployment/">Continuous Integration and Continuous Deployment 2023</a>
 </li>
 <li>
-    <a href="https://archive.fosdem.org/2022/schedule/track/testing_and_automation/">Testing and Automation 2022</a>
+    <a href="https://archive.fosdem.org/2022/schedule/track/testing_and_automation/">Testing and Automation 2022</a> |
     <a href="https://archive.fosdem.org/2022/schedule/track/continuous_integration_and_continuous_deployment/">Continuous Integration and Continuous Deployment 2022</a>
 </li>
 <li>
-    <a href="https://archive.fosdem.org/2021/schedule/track/testing_and_automation/">Testing and Automation 2021</a>
+    <a href="https://archive.fosdem.org/2021/schedule/track/testing_and_automation/">Testing and Automation 2021</a> |
     <a href="https://archive.fosdem.org/2021/schedule/track/continuous_integration_and_continuous_deployment/">Continuous Integration and Continuous Deployment 2021</a>
 </li>
 <li>
-    <a href="https://archive.fosdem.org/2020/schedule/track/testing_and_automation/">Testing and Automation 2020</a>
+    <a href="https://archive.fosdem.org/2020/schedule/track/testing_and_automation/">Testing and Automation 2020</a> |
     <a href="https://archive.fosdem.org/2020/schedule/track/continuous_integration_and_continuous_deployment/">Continuous Integration and Continuous Deployment 2020</a>
 </li>
 <li><a href="https://archive.fosdem.org/2018/schedule/track/testing_and_automation/">Testing and Automation 2018</a></li>