It was moved by commit 1a978c50
("HID: Move hiddev.txt to the new Documentation/hid directory")
so update the MAINTAINERS pattern too.

cc: Jiri Kosina <jkosina@suse.cz>
cc: Alan Ott <alan@signal11.us>
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>