update: stale glossary entry for minikube

internal link

Author: yuto-kimura-g

content/en/docs/reference/glossary/minikube.md

@@ -2,7 +2,7 @@
 title: Minikube
 id: minikube
 date: 2018-04-12
-full_link: /docs/setup/learning-environment/minikube/
+full_link: /docs/tasks/tools/#minikube
 short_description: >
   A tool for running Kubernetes locally.
 
@@ -17,4 +17,4 @@ tags:
 
 Minikube runs an all-in-one or a multi-node local Kubernetes cluster inside a VM on your computer.
 You can use Minikube to
-[try Kubernetes in a learning environment](/docs/setup/learning-environment/).
+[try Kubernetes in a learning environment](/docs/tasks/tools/#minikube).