[server] Fix the dependency on nginx (#1143)

Noticed during the recent deployment.

infra/services/nginx/nginx.service

@@ -2,7 +2,6 @@
 Documentation=https://www.docker.com/blog/how-to-use-the-official-nginx-docker-image/
 Requires=docker.service
 After=docker.service
-Requires=nginx.service
 
 [Install]
 WantedBy=multi-user.target

server/scripts/deploy/museum.nginx.service

@@ -3,6 +3,7 @@ Documentation=https://github.com/ente-io/ente/tree/main/server#readme
 Requires=docker.service
 After=docker.service
 Requires=nginx.service
+After=nginx.service
 
 [Service]
 Restart=on-failure