Document that log_line_prefix %t does not print timezone on Win32.

doc/src/sgml/config.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.98 2006/11/30 20:50:44 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.99 2006/12/12 21:30:33 momjian Exp $ -->
 
 <chapter Id="runtime-config">
   <title>Server Configuration</title>
@@ -2803,7 +2803,7 @@ SELECT * FROM parent WHERE key = 2400;
             </row>
             <row>
              <entry><literal>%t</literal></entry>
-             <entry>Time stamp (no milliseconds)</entry>
+             <entry>Time stamp (no milliseconds, no timezone on Windows)</entry>
              <entry>no</entry>
             </row>
             <row>