BUG #2901: missing alter table online help in psql

The following bug has been logged online:

Bug reference: 2901
Logged by: Jens-Wolfhard Schicke
Email address: j(dot)schicke(at)asco(dot)de
PostgreSQL version: PostgreSQL 8.2
Operating system: Linux
Description: missing alter table online help in psql
Details:

\h alter table

is missing the syntax for the command
alter table the_table alter column the_column type varchar(175);