doc: Drop stale note about extension LWLock names.
Oversight in commit 38b602b028.
Backpatch-through: 19
Branch
------
REL_19_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/4186d7169b068a3f248e9795702d41ea9842a954
Modified Files
--------------
doc/src/sgml/monitoring.sgml | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)