Uniformize spelling

register.txt

 
 (2001-??-??)
-PostgreSQL has a Web site at http://www.postgresql.org/ which carries details
+PostgreSQL has a web site at http://www.postgresql.org/ which carries details
 on the latest release, upcoming features, and other information to make your
 work or play with PostgreSQL more productive.
 
 Please check the following URL for a listing of the current user-support
 mailing lists:
 
-	http://www.ca.Postgresql.org/users-lounge/index.html#maillist
+	http://www.ca.postgresql.org/users-lounge/index.html#maillist
 
 All of the mailing lists are currently archived and viewable at:
 
-	http://archives.Postgresql.org/
+	http://archives.postgresql.org/
 
 And, so that we have an idea of who is using what, please connect to the
 following registration URL: