doc: improve PG 14 relnote item about adding btree pages to FSM
Wording confirmed by Peter Geoghegan.
Backpatch-through: 14 only
Branch------REL_14_STABLE
Details-------https://git.postgresql.org/pg/commitdiff/049d3617a3bedb2a1d97d1621f36c861f52269a7
Modified Files--------------doc/src/sgml/release-14.sgml | 6 +++---1 file changed, 3 insertions(+), 3 deletions(-)
