2->3

Author: tstromberg

docs/configuring_kubernetes.md

@@ -11,7 +11,7 @@ minikube defaults to the latest stable version of Kubernetes. You may select a d
 
   `minikube start --kubernetes-version=v1.10.13`
 
-minikube follows the [Kubernetes Version and Version Skew Support Policy](https://kubernetes.io/docs/setup/version-skew-policy/), so we guarantee support for the latest build for the last 3 minor Kubernetes releases. When practical, minikube extends this policy two additional minor releases so that users can emulate legacy environments.
+minikube follows the [Kubernetes Version and Version Skew Support Policy](https://kubernetes.io/docs/setup/version-skew-policy/), so we guarantee support for the latest build for the last 3 minor Kubernetes releases. When practical, minikube extends this policy three additional minor releases so that users can emulate legacy environments.
 
 As of August 2019, this means that minikube supports and actively tests against the latest builds of: