Fix obsolete FSM remarks in nbtree README.

Peter Geoghegan <pg@bowt.ie>

Commit: 31c7fb41e26bf03dae231c7165a1a16388b2e366
Author: Peter Geoghegan <pg@bowt.ie>
Date: 2021-02-09T19:36:51Z
Releases: 14.0
Fix obsolete FSM remarks in nbtree README.

The free space map has used a dedicated relation fork rather than shared
memory segments for over a decade.

Files

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src/backend/access/nbtree/README modified +5 −8