add adaptto talk links

Author: stefanseifert

src/site/markdown/index.md

@@ -34,6 +34,8 @@ Additionally the CONGA AEM Maven plugin is provided which allows to deploy a bun
 * [wcm.io CONGA training material with exercises](https://training.wcm.io/conga/)
 * [adaptTo() 2015 Talk: CONGA - Configuration generation for Sling and AEM](https://adapt.to/2015/en/schedule/conga---configuration-generation-for-sling-and-aem.html)
 * [adaptTo() 2017 Talk: Automate AEM Deployment with Ansible and wcm.io CONGA](https://adapt.to/2017/en/schedule/automate-aem-deployment-with-ansible-and-wcm-io-conga.html)
+* [adaptTo() 2018 Talk: Maven Archetypes for AEM & Cloud Deployment](https://adapt.to/2018/en/schedule/maven-archetypes-for-aem.html)
+* [adaptTo() 2020 Talk: Use Cloud Manager to deploy CONGA-based AEM Applications](https://adapt.to/2020/en/schedule/use-cloud-manager-to-deploy-conga-based-aem-applications.html)