fix(docs): Added missing tags

content/day-1/02_controllers.md

@@ -2,7 +2,7 @@
 title: "The Hidden Brains of Kubernetes: Meet Controllers Powering the Cloud"
 weight: 2
 tags:
- - <tag>
+ - rejekts
 ---
 
 {{% button href="https://www.youtube.com/watch?v=PciVvE02L2w" style="warning" icon="video" %}}Watch talk on YouTube{{% /button %}}

content/day-1/04_dns-debugging.md

@@ -2,7 +2,7 @@
 title: Understanding and Debugging DNS in Kubernetes Clusters
 weight: 4
 tags:
- - <tag>
+ - rejekts
 ---
 
 {{% button href="https://www.youtube.com/watch?v=awXjABDknww" style="warning" icon="video" %}}Watch talk on YouTube{{% /button %}}