fs: reformat idmapped mounts entry

Reformat idmapped mounts to clearly mark where it belongs.

Link: https://lore.kernel.org/r/20231122-vfs-mnt_idmap-v1-4-dae4abdde5bd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: brauner

MAINTAINERS

@@ -8177,6 +8177,16 @@ F:	fs/exportfs/
 F:	fs/fhandle.c
 F:	include/linux/exportfs.h
 
+FILESYSTEMS [IDMAPPED MOUNTS]
+M:	Christian Brauner <brauner@kernel.org>
+M:	Seth Forshee <sforshee@kernel.org>
+L:	linux-fsdevel@vger.kernel.org
+S:	Maintained
+F:	Documentation/filesystems/idmappings.rst
+F:	fs/mnt_idmapping.c
+F:	include/linux/mnt_idmapping.*
+F:	tools/testing/selftests/mount_setattr/
+
 FILESYSTEMS [IOMAP]
 M:	Christian Brauner <brauner@kernel.org>
 R:	Darrick J. Wong <djwong@kernel.org>
@@ -10252,16 +10262,6 @@ S:	Maintained
 W:	https://github.com/o2genum/ideapad-slidebar
 F:	drivers/input/misc/ideapad_slidebar.c
 
-IDMAPPED MOUNTS
-M:	Christian Brauner <brauner@kernel.org>
-M:	Seth Forshee <sforshee@kernel.org>
-L:	linux-fsdevel@vger.kernel.org
-S:	Maintained
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git
-F:	Documentation/filesystems/idmappings.rst
-F:	include/linux/mnt_idmapping.*
-F:	tools/testing/selftests/mount_setattr/
-
 IDT VersaClock 5 CLOCK DRIVER
 M:	Luca Ceresoli <luca@lucaceresoli.net>
 S:	Maintained