Fix cross-references:

xntpd.8 --> ntpd.8
acl_delete_perms.3 --> acl_delete_perm.3
getname.2 --> getsockname.2

MFC after:	1 week

lib/libc/posix1e/acl_add_perm.3

@@ -67,7 +67,7 @@ value.
 .Sh SEE ALSO
 .Xr acl 3 ,
 .Xr acl_clear_perms 3 ,
-.Xr acl_delete_perms 3 ,
+.Xr acl_delete_perm 3 ,
 .Xr acl_get_permset 3 ,
 .Xr acl_set_permset 3 ,
 .Xr posix1e 3

share/man/man4/ng_ksocket.4

@@ -107,7 +107,7 @@ destination address parameter should be supplied as an argument.
 Currently unimplemented.
 .It Dv NGM_KSOCKET_GETNAME
 Equivalent to the
-.Xr getname 2
+.Xr getsockname 2
 system call.  The name is returned as a
 .Dv "struct sockaddr"
 in the arguments field of the reply.

share/man/man5/rc.conf.5

@@ -944,14 +944,14 @@ command (typically a hostname).
 If set to
 .Ar YES
 then run the
-.Xr xntpd 8
+.Xr ntpd 8
 command at boot time.
 .It Va xntpd_program
 .Pq Vt str
 path to
-.Xr xntpd 8
+.Xr ntpd 8
 (default
-.Pa /usr/sbin/xntpd ) .
+.Pa /usr/sbin/ntpd ) .
 .It Va xntpd_flags
 .Pq Vt str
 If
@@ -959,7 +959,7 @@ If
 is set to
 .Ar YES ,
 these are the flags to pass to the
-.Xr xntpd 8
+.Xr ntpd 8
 daemon.
 .It Va nis_client_enable
 .Pq Vt bool
@@ -1783,7 +1783,7 @@ Flags for
 .Xr tickadj 8 ,
 .Xr timed 8 ,
 .Xr vinum 8 ,
-.Xr xntpd 8 ,
+.Xr ntpd 8 ,
 .Xr xtend 8 ,
 .Xr ypbind 8 ,
 .Xr ypserv 8 ,