fix cksum syntax, CDROM -> CD-ROM, give a specific example of a kernel set

rather than kern.tgz, add dd(1) xref for usb images

share/man/man7/release.7

@@ -1,4 +1,4 @@
-.\"	$NetBSD: release.7,v 1.34 2012/09/07 07:07:15 wiz Exp $
+.\"	$NetBSD: release.7,v 1.35 2014/11/03 20:06:25 snj Exp $
 .\"
 .\" Copyright (c) 1997, 2000, 2005 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -79,7 +79,7 @@ All
 .Sy MD5
 files are MD5 digests for the various files in that directory, in the
 format produced by the command:
-.Sy cksum -m Aq Sy file .
+.Sy cksum -a MD5 Aq Sy file .
 .Pp
 All
 .Sy SHA512
@@ -151,7 +151,7 @@ These images are usually bootable.
 .It Sy MD5
 .It Sy SHA512
 .It Sy NetBSD- Ns Ao Em rel Ac Ns Sy - Ns Ao Em machine Ac Ns Sy .iso
-CDROM images in ISO 9660 format, usually created with
+CD-ROM images in ISO 9660 format, usually created with
 .Dq ./build.sh ... iso-image ...
 after a
 .Dq ./build.sh -x ... release ...
@@ -288,8 +288,12 @@ This set contains the system configuration files that reside in
 and in several other places throughout the file system hierarchy.
 .It Sy games.tgz
 This set includes the games and their manual pages.
-.It Sy kern.tgz
-This set includes a generic kernel.
+.It Sy kern-GENERIC.tgz
+This set includes a kernel built from the
+.Sy GENERIC
+kernel configuration file.
+This is meant as an example only; different
+platforms may have differently named kernels.
 .It Sy man.tgz
 This set includes all of the manual pages for the binaries and other
 software contained in the
@@ -336,7 +340,7 @@ platforms may have differently named kernels.
 installation helper items
 .Bl -tag -width "diskimage/"
 .It Sy cdrom/
-CDROM images in ISO 9660 format, created as part of
+CD-ROM images in ISO 9660 format, created as part of
 .Dq build.sh ... release ...
 in
 .Pa src .
@@ -412,6 +416,7 @@ tape images, on those platforms that provide them
 .El
 .Sh SEE ALSO
 .Xr cksum 1 ,
+.Xr dd 1 ,
 .Xr gzip 1 ,
 .Xr split 1 ,
 .Xr tar 1