why does documentation use "END CASE" when that doesn't work

The documentation says:

CASE search-expression
WHEN expression [, expression [ ... ]] THEN
statements
[ WHEN expression [, expression [ ... ]] THEN
statements
... ]
[ ELSE
statements ]
END CASE;

And it repeats the "END CASE" phrase in other examples.

However, that doesn't work. You have to just use "END".

Shouldn't the documentation be fixed?

Susan