Typo in 2.7 Aggregate Functions

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Page: https://www.postgresql.org/docs/15/tutorial-agg.html
Description:

Near the end of Chapter 2.7 Aggregate Functions of the documentation, the
command FILTER is introduced. The full query is

SELECT city, max(temp_lo), count(*) FILTER (WHERE temp_lo < 30)
FROM weather
GROUP BY city
HAVING max(temp_lo) < 40;

and the output shows a count value of 5. This is an error.

In total we only have 3 rows in the table so far. Furthermore, none of the
rows have temp_lo < 30. If I'm not mistaken, the count value should be 0.

Thanks,
Jimmy