adjust link in the external proxy docs

Author: Svanvith

docs/admin/getting-started/container/docker-compose/docker-external-proxy.md

@@ -53,7 +53,7 @@ systemctl enable docker && systemctl start docker
 Download the necessary configuration files:
 
 ```bash
-git clone https://github.com/opencloud-eu/opencloud.git
+git clone https://github.com/opencloud-eu/opencloud-compose.git
 ```
 
 ## Install Nginx & Certbot