Correct typo.

doc/src/sgml/ref/set.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.34 2000/03/31 03:20:17 thomas Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.35 2000/03/31 17:45:32 tgl Exp $
 Postgres documentation
 -->
 
@@ -784,7 +784,6 @@ SET TRANSACTION ISOLATION LEVEL { READ COMMITTED | SERIALIZABLE }
 	<variablelist>
 	 <varlistentry>
 	  <term><replaceable class="parameter">integer</replaceable></term>
-	  <term>ON</term>
 	  <listitem>
 	   <para>
 	    Maximum depth.