docs: add talk regarding operators (#1661)

Author: csviri

docs/documentation/getting-started.md

@@ -16,6 +16,7 @@ low-level details that the SDK handles automatically.
 
 For an introduction on operators, please see this
 [blog post](https://blog.container-solutions.com/kubernetes-operators-explained).
+or [this talk](https://www.youtube.com/watch?v=CvftaV-xrB4)
 
 You can read about the common problems JOSDK is solving for you
 [here](https://blog.container-solutions.com/a-deep-dive-into-the-java-operator-sdk).

docs/documentation/intro-operators.md

@@ -10,7 +10,7 @@ permalink: /docs/intro-operators
 This page provides a selection of articles that gives an introduction to Kubernetes operators.
 
 ## Operators in General
-
+ - [Implementing Kubernetes Operators in Java talk](https://www.youtube.com/watch?v=CvftaV-xrB4)
  - [Introduction of the concept of Kubernetes Operators](https://blog.container-solutions.com/kubernetes-operators-explained)
  - [Operator pattern explained in Kubernetes documentation](https://kubernetes.io/docs/concepts/extend-kubernetes/operator/) 
  - [An explanation why Java Operators makes sense](https://blog.container-solutions.com/cloud-native-java-infrastructure-automation-with-kubernetes-operators)