ntfs: dir.c: fix kernel-doc function parameter warnings

Correct the kernel-doc function parameter warnings for function
ntfs_dir_fsync() to prevent the following kernel-doc warnings:

dir.c:1489: warning: Function parameter or member 'start' not described in 'ntfs_dir_fsync'
dir.c:1489: warning: Function parameter or member 'end' not described in 'ntfs_dir_fsync'
dir.c:1489: warning: Excess function parameter 'dentry' description in 'ntfs_dir_fsync'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20231219045414.24670-1-rdunlap@infradead.org
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Cc: Anton Altaparmakov <anton@tuxera.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: <linux-ntfs-dev@lists.sourceforge.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>