Fix broken markup.

Author: tglsfdc

doc/src/sgml/ref/show.sgml

@@ -1,5 +1,5 @@
 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/show.sgml,v 1.19 2002/08/04 05:09:36 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/show.sgml,v 1.20 2002/08/04 05:46:02 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -98,7 +98,6 @@ SHOW DateStyle;
   <para>
    Show the current genetic optimizer (<literal>geqo</literal>) setting:
 <programlisting>
-<screen>
 SHOW GEQO;
  geqo
 ------
@@ -109,7 +108,7 @@ SHOW GEQO;
 
   <para>
    Show all settings:
-<screen>
+<programlisting>
 SHOW ALL;
              name              |                setting
 -------------------------------+---------------------------------------
@@ -123,7 +122,7 @@ SHOW ALL;
  wal_files                     | 0
  wal_sync_method               | fdatasync
 (94 rows)
-</screen>
+</programlisting>
   </para>
 
  </refsect1>