pg_walinspect last query typo

[jian he]

hi.
https://www.postgresql.org/docs/current/pgwalinspect.html

last query should be:
SELECT * FROM pg_get_wal_stats('0/1E847D00', '0/1E84F500')
WHERE   count > 0 AND
        "resource_manager/record_type" = 'Transaction'
LIMIT 1;