sbin/{ffsinfo,mount,newfs}: reference ffs(4) in man pages

With some copy-editing to account for the man page being in
section 7 on stable/14.

PR:		282867
MFC:		stable/14
Approved by:	mhorne (via IRC)

(cherry picked from commit 3a212cc66a)

sbin/ffsinfo/ffsinfo.8

@@ -36,7 +36,7 @@
 .\"
 .\" $TSHeader: src/sbin/ffsinfo/ffsinfo.8,v 1.3 2000/12/12 19:30:55 tomsoft Exp $
 .\"
-.Dd September 8, 2000
+.Dd November 19, 2024
 .Dt FFSINFO 8
 .Os
 .Sh NAME
@@ -120,6 +120,7 @@ to
 .Pa /var/tmp/ffsinfo
 with all available information.
 .Sh SEE ALSO
+.Xr ffs 7 ,
 .Xr dumpfs 8 ,
 .Xr fsck 8 ,
 .Xr gpart 8 ,

sbin/mount/mount.8

@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd January 24, 2024
+.Dd November 19, 2024
 .Dt MOUNT 8
 .Os
 .Sh NAME
@@ -572,6 +572,7 @@ support for a particular file system might be provided either on a static
 .Xr procfs 5 ,
 .Xr tarfs 5 ,
 .Xr tmpfs 5 ,
+.Xr ffs 7 ,
 .Xr automount 8 ,
 .Xr fstyp 8 ,
 .Xr kldload 8 ,

sbin/newfs/newfs.8

@@ -27,7 +27,7 @@
 .\"
 .\"     @(#)newfs.8	8.6 (Berkeley) 5/3/95
 .\"
-.Dd May 18, 2024
+.Dd November 19, 2024
 .Dt NEWFS 8
 .Os
 .Sh NAME
@@ -355,6 +355,7 @@ on file systems that contain many small files.
 .Xr geom 4 ,
 .Xr disktab 5 ,
 .Xr fs 5 ,
+.Xr ffs 7 ,
 .Xr camcontrol 8 ,
 .Xr dump 8 ,
 .Xr dumpfs 8 ,