Add more 9.0 release note documentation links.

doc/src/sgml/plpython.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/plpython.sgml,v 1.46 2010/03/18 19:43:03 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/plpython.sgml,v 1.47 2010/03/21 02:24:29 momjian Exp $ -->
 
 <chapter id="plpython">
  <title>PL/Python - Python Procedural Language</title>
@@ -397,7 +397,7 @@ $$ LANGUAGE plpythonu;
   </para>
   </sect2>
 
-  <sect2>
+  <sect2 id="plpython-arrays">
    <title>Arrays, Lists</title>
   <para>
    SQL array values are passed into PL/Python as a Python list.  To

doc/src/sgml/ref/create_type.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/create_type.sgml,v 1.80 2009/12/26 16:55:21 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/create_type.sgml,v 1.81 2010/03/21 02:24:29 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -84,7 +84,7 @@ CREATE TYPE <replaceable class="parameter">name</replaceable>
   </para>
   </refsect2>
 
-  <refsect2>
+  <refsect2 id="SQL-CREATETYPE-enum">
    <title>Enumerated Types</title>
 
    <para>