feat: add url to cert-manager-webhook-regery

Author: darioackermann

content/docs/configuration/acme/dns01/README.md

@@ -181,6 +181,7 @@ Links to these supported providers along with their documentation are below:
 - [`cert-manager-webhook-oci`](https://gitlab.com/dn13/cert-manager-webhook-oci) (Oracle Cloud Infrastructure)
 - [`cert-manager-webhook-opentelekomcloud`](https://github.com/akyriako/cert-manager-webhook-opentelekomcloud)
 - [`cert-manager-webhook-pdns`](https://github.com/zachomedia/cert-manager-webhook-pdns)
+- [`cert-manager-webhook-regery`](https://github.com/darioackermann/cert-manager-webhook-regery)
 - [`cert-manager-webhook-scaleway`](https://github.com/scaleway/cert-manager-webhook-scaleway)
 - [`cert-manager-webhook-selectel`](https://github.com/selectel/cert-manager-webhook-selectel)
 - [`cert-manager-webhook-softlayer`](https://github.com/cgroschupp/cert-manager-webhook-softlayer)