chore: apply yaml lint fixes across compose files

- Fix trailing whitespace in compose files
- Add missing final newlines (EOF)
- Fix indentation in dockmon (3-space -> 2-space) and glance monitor.yml
- Align comments consistently

nextcloud/compose.yaml

@@ -5,7 +5,7 @@ services:
     restart: unless-stopped
     container_name: nextcloud-aio-mastercontainer # Do not change
     volumes:
-      - nextcloud_aio_mastercontainer:/mnt/docker-aio-config # Do not change (backup) 
+      - nextcloud_aio_mastercontainer:/mnt/docker-aio-config # Do not change (backup)
       - /var/run/docker.sock:/var/run/docker.sock
       - /dev/dri:/dev/dri
     ports: