dump(8) first appeared in V4 UNIX

http://minnie.tuhs.org/cgi-bin/utree.pl?file=V4/man/man8

PR:		212444
Approved by:	bcr (mentor)
Obtained from:	TUHS
MFC after:	4 days
Differential Revision:	https://reviews.freebsd.org/D8105

sbin/dump/dump.8

@@ -29,7 +29,7 @@
 .\"     @(#)dump.8	8.3 (Berkeley) 5/1/95
 .\" $FreeBSD$
 .\"
-.Dd February 24, 2006
+.Dd October 3, 2016
 .Dt DUMP 8
 .Os
 .Sh NAME
@@ -514,7 +514,7 @@ Many, and verbose.
 A
 .Nm
 utility appeared in
-.At v6 .
+.At v4 .
 .Sh BUGS
 Fewer than 32 read errors on the file system are ignored, though all
 errors will generate a warning message.