list example files in FILES with a short description: generally, "Example

configuration file.", but occasionally something else fit better; at the
same time, try to make the format for FILES more consistent;
original diff from clematis

src/usr.sbin/ntpd/ntpd.conf.5

@@ -1,4 +1,4 @@
-.\" $OpenBSD: ntpd.conf.5,v 1.45 2020/02/12 14:46:36 schwarze Exp $
+.\" $OpenBSD: ntpd.conf.5,v 1.46 2020/05/16 16:58:12 jmc Exp $
 .\"
 .\" Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 .\" OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: February 12 2020 $
+.Dd $Mdocdate: May 16 2020 $
 .Dt NTPD.CONF 5
 .Os
 .Sh NAME
@@ -248,11 +248,11 @@ constraints from "https://www.google.com/"
 .Sh FILES
 .Bl -tag -width /etc/examples/ntpd.conf -compact
 .It Pa /etc/ntpd.conf
-default
+Default
 .Xr ntpd 8
-configuration file
+configuration file.
 .It Pa /etc/examples/ntpd.conf
-example configuration file
+Example configuration file.
 .El
 .Sh SEE ALSO
 .Xr ntpctl 8 ,