Fixed url for issues.
Fixed url for issues.

The url for issues is https://github.com/kubernetes/minikube/issues, not https://github.com/kubernetes/minikube/issue.
dalehamel/minikube,warmchang/minikube,warmchang/minikube,dlorenc/minikube,dalehamel/minikube,kubernetes/minikube,dalehamel/minikube,kubernetes/minikube,warmchang/minikube,kubernetes/minikube,dlorenc/minikube,dlorenc/minikube,dlorenc/minikube,dlorenc/minikube,dlorenc/minikube,warmchang/minikube,dlorenc/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,dlorenc/minikube,warmchang/minikube