It's one alter command per file when modfying, never been a bother for me

you're only typing multiple alter statements, not as if it's a hardship 😉

ALTER DATABASE somedb MODIFY FILE

What you could have done though is this

ALTER DATABASE [NAME]

MODIFY FILE ( NAME = NAME, FILENAME =

"D:\Data\NAME.mdf")

ALTER DATABASE [NAME]

MODIFY FILE ( NAME = NAME_log, FILENAME =

"L:\Logs\NAME_log.ldf")

Then when you're ready issue

ALTER DATABASE [NAME] SET OFFLINE WITH ROLLBACK IMMEDIATE;