update container-runtime.md

Author: dejanu

content/en/docs/reference/glossary/container-runtime.md

@@ -11,7 +11,8 @@ tags:
 - fundamental
 - workload
 ---
- The container runtime is the software that is responsible for running containers.
+ Kubernetes doesn’t know how to run containers it relies on the container runtime component. 
+ The container runtime is a fundamental component that is responsible for managing the execution and lifecycle of containers.
 
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