Merge pull request #4740 from PeterVanek/master

docs: add reference to Efficient IP webhook provider

README.md

@@ -79,6 +79,7 @@ Known providers using webhooks:
 | Adguard Home Provider | https://github.com/muhlba91/external-dns-provider-adguard |
 | Anexia | https://github.com/ProbstenHias/external-dns-anexia-webhook |
 | Bizfly Cloud | https://github.com/bizflycloud/external-dns-bizflycloud-webhook |
+| Efficient IP | https://github.com/EfficientIP-Labs/external-dns-efficientip-webhook |
 | Gcore | https://github.com/G-Core/external-dns-gcore-webhook |
 | GleSYS | https://github.com/glesys/external-dns-glesys |
 | Hetzner | https://github.com/mconfalonieri/external-dns-hetzner-webhook |