Update to_char("CC") description.

doc/src/sgml/func.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.348 2006/12/21 16:05:12 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.349 2007/01/12 20:06:10 momjian Exp $ -->
 
  <chapter id="functions">
   <title>Functions and Operators</title>
@@ -4617,7 +4617,7 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
        </row>
        <row>
         <entry><literal>CC</literal></entry>
-        <entry>century (2 digits)</entry>
+        <entry>century component of year (minimum 2 digits)</entry>
        </row>
        <row>
         <entry><literal>J</literal></entry>