Fix broken markup I just introduced.

doc/src/sgml/libpq.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.109 2003/02/14 01:32:31 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.110 2003/02/14 02:21:25 momjian Exp $
 -->
 
  <chapter id="libpq">
@@ -221,7 +221,7 @@ PGconn *PQconnectdb(const char *conninfo)
       name in pg_service.conf that holds additional connection parameters.
       This allows applications to specify only a service name so connection parameters 
       can be centrally maintained.  See 
-      <filename><replaceable>PREFIX</>/share/</>pg_service.conf.sample</> for
+      <filename><replaceable>PREFIX</>/share/pg_service.conf.sample</> for
       information on how to set up the file.
      </para>
      </listitem>