small mistakes in func.sgml

Hello,

This patch corrects some small mistakes in doc/src/sgml/func.sgml

Index: doc/src/sgml/func.sgml
===================================================================
RCS file: /projects/cvsroot/pgsql-server/doc/src/sgml/func.sgml,v
retrieving revision 1.112
diff -c -r1.112 func.sgml
*** doc/src/sgml/func.sgml    2002/08/16 23:01:18    1.112
--- doc/src/sgml/func.sgml    2002/08/21 04:51:43
***************
*** 245,251 ****
      </synopsis>
      is equivalent to
      <synopsis>
! <replaceable>a</replaceable> >= <replaceable>x</replaceable> AND <replaceable>a</replaceable>able> <=
<replaceable>y</replaceable>
      </synopsis>
      Similarly,
      <synopsis>
--- 245,251 ----
      </synopsis>
      is equivalent to
      <synopsis>
! <replaceable>a</replaceable> >= <replaceable>x</replaceable> AND <replaceable>a</replaceable> <=
<replaceable>y</replaceable>
      </synopsis>
      Similarly,
      <synopsis>
***************
*** 253,259 ****
      </synopsis>
      is equivalent to
      <synopsis>
! <replaceable>a</replaceable> < <replaceable>x</replaceable> OR <replaceable>a</replaceable>able> >
<replaceable>y</replaceable>
      </synopsis>
      There is no difference between the two respective forms apart from
      the <acronym>CPU</acronym> cycles required to rewrite the first one
--- 253,259 ----
      </synopsis>
      is equivalent to
      <synopsis>
! <replaceable>a</replaceable> < <replaceable>x</replaceable> OR <replaceable>a</replaceable> >
<replaceable>y</replaceable>
      </synopsis>
      There is no difference between the two respective forms apart from
      the <acronym>CPU</acronym> cycles required to rewrite the first one


--
Alvaro Herrera (<alvherre[a]atentus.com>)
"El dia que dejes de cambiar dejaras de vivir"