Fix a minor SGML markup infelicity in recently-applied log_disconnections

patch.

doc/src/sgml/runtime.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.238 2004/02/17 03:54:56 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.239 2004/02/17 05:45:17 neilc Exp $
 -->
 
 <Chapter Id="runtime">
@@ -1913,11 +1913,11 @@ SET ENABLE_SEQSCAN TO OFF;
       <term><varname>log_disconnections</varname> (<type>boolean</type>)</term>
       <listitem>
        <para>
-       This outputs a line in the server logs similar to LOG_CONNECTIONS 
-       but at session termination, and includes the duration of the 
-       session.   This is off by default. This option can only be set at 
-       server start or in the <filename>postgresql.conf</filename> 
-       configuration file.
+        This outputs a line in the server logs similar to
+        <varname>log_connections</varname> but at session termination,
+        and includes the duration of the session.  This is off by
+        default. This option can only be set at server start or in the
+        <filename>postgresql.conf</filename> configuration file.
        </para>
       </listitem>
      </varlistentry>