Bump date for previous, slightly improve markup.

share/man/man4/bce.4

@@ -1,4 +1,4 @@
-.\" $NetBSD: bce.4,v 1.3 2006/06/29 20:31:11 dogcow Exp $
+.\" $NetBSD: bce.4,v 1.4 2006/06/29 22:16:45 wiz Exp $
 .\"
 .\" Copyright (c) 2003 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -34,7 +34,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd September 28, 2003
+.Dd June 29, 2006
 .Dt BCE 4
 .Os
 .Sh NAME
@@ -69,7 +69,7 @@ the accept all multicast mode.
 .Pp
 Due to limitations in the Broadcom chip, it cannot DMA transfer to RAM at
 or above 1GB; see
-.Va REALEXTMEM
+.Dv REALEXTMEM
 in
 .Xr options 4
 for a workaround to limit the available system memory.