Updated video links in README (#889)

* Remove pre-prod wording from README

Removed to reduce confusion with GA launch.

* README video links

Added my recent video comparison and updated the container day link to the dedicated video

README.md

@@ -44,7 +44,8 @@ Follow the setup recommendations of your cloud provider.
 - [Contributing](CONTRIBUTING.md)
 
 ## Talks
-- [Karpenter @ Container Day, October 2021](https://youtu.be/3f0Tv7IiQQw?t=19028)
+- [Karpenter vs Kubernetes Cluster Autoscaler](https://youtu.be/3QsVRHVdOnM)
+- [Karpenter @ Container Day, October 2021](https://youtu.be/qxWJRUF6JJc)
 - [Karpenter @ Container Day, May 2021](https://youtu.be/MZ-4HzOC_ac?t=7137)
 - [Groupless Autoscaling with Karpenter @ Kubecon, May 2021](https://www.youtube.com/watch?v=43g8uPohTgc)