Fix markup.

doc/src/sgml/mvcc.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/mvcc.sgml,v 2.31 2002/12/18 20:40:24 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/mvcc.sgml,v 2.32 2003/01/11 00:00:02 petere Exp $
 -->
 
  <chapter id="mvcc">
@@ -874,6 +874,7 @@ UPDATE accounts SET balance = balance - 100.00 WHERE acctnum = 22222;
     situation, application developers should be aware of the
     relatively poor concurrent performance of GiST and R-tree
     indexes.
+   </para>
   </sect1>
  </chapter>
 

doc/src/sgml/ref/set_transaction.sgml

-<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/set_transaction.sgml,v 1.10 2003/01/10 22:03:27 petere Exp $ -->
+<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/set_transaction.sgml,v 1.11 2003/01/11 00:00:03 petere Exp $ -->
 <refentry id="SQL-SET-TRANSACTION">
  <docinfo>
   <date>2000-11-24</date>
@@ -48,7 +48,7 @@ SET SESSION CHARACTERISTICS AS TRANSACTION
 
    <variablelist>
     <varlistentry>
-     <term><literal>READ COMMITTED<literal></term>
+     <term><literal>READ COMMITTED</literal></term>
      <listitem>
       <para>
        A statement can only see rows committed before it began. This