[stable/kube-lego] Update link to migration guide (#5371)

* [stable/kube-lego] Update link to migration guide

* [stable/kube-lego] Bump chart version

* [stable/kube-lego] Add home key to Chart

* [kube-lego] Add appVersion to Chart

stable/kube-lego/Chart.yaml

@@ -1,12 +1,14 @@
 apiVersion: v1
 description: DEPRECATED Automatically requests certificates from Let's Encrypt
 name: kube-lego
-version: 0.4.0
+version: 0.4.1
+appVersion: v0.1.5
 # The kube-lego chart is deprecated and no longer maintained.
 deprecated: true
 keywords:
 - kube-lego
 - letsencrypt
+home: https://github.com/jetstack/kube-lego
 sources:
 - https://github.com/jetstack/kube-lego/tree/master/examples/nginx
 engine: gotpl

stable/kube-lego/README.md

@@ -8,7 +8,7 @@
 >  features. The latest Kubernetes release that kube-lego officially supports
 >  is **1.8**.  The officially endorsed successor is **[cert-manager](https://hub.kubeapps.com/charts/stable/cert-manager)**.
 >
->  If you are a current user of kube-lego, you can find a migration guide [here](https://github.com/jetstack/cert-manager/blob/master/docs/user-guides/migrating-from-kube-lego.md).
+>  If you are a current user of kube-lego, you can find a migration guide [here](https://cert-manager.readthedocs.io/en/latest/tutorials/acme/migrating-from-kube-lego.html).
 >
 >  :warning: