docs: Fertiges Docker Image aus Container-Registry bewerben

docs/server-modi.md

@@ -56,5 +56,5 @@ docker run -d \
   -v ./data/gamedata:/opt/tmserver/GameData \
   -v ./data/controlpanel:/var/www/html \
   -v ./data/xaseco:/opt/tmserver/xaseco \
-  --name tmserver tmserver:latest
+  --name tmserver git.techniverse.net/scriptos/trackmania-server:latest
 ```