Update immich.subdomain.conf.sample

Use the default immich-server container name as per the official compose

Author: NLZ

immich.subdomain.conf.sample

@@ -1,7 +1,7 @@
 ## Version 2024/10/15
 # make sure that your immich container is named immich
 # make sure that your dns has a cname set for immich
-# immich v1.118+ only. For earlier versions, change $upstream_port to 3001 
+# immich v1.118+ only. For earlier versions, change $upstream_port to 3001
 
 server {
     listen 443 ssl;
@@ -38,7 +38,7 @@ server {
 
         include /config/nginx/proxy.conf;
         include /config/nginx/resolver.conf;
-        set $upstream_app immich;
+        set $upstream_app immich-server;
         set $upstream_port 2283;
         set $upstream_proto http;
         proxy_pass $upstream_proto://$upstream_app:$upstream_port;
@@ -48,7 +48,7 @@ server {
     location ~ (/immich)?/api {
         include /config/nginx/proxy.conf;
         include /config/nginx/resolver.conf;
-        set $upstream_app immich;
+        set $upstream_app immich-server;
         set $upstream_port 2283;
         set $upstream_proto http;
         proxy_pass $upstream_proto://$upstream_app:$upstream_port;