Fix typo in src/backend/access/transam/README.

diff --git a/src/backend/access/transam/README b/src/backend/access/transam/README
index 22c8ae97551345528f9ca4ccfc7307545fc548dd..6de2378748a70dfaeb6d9cb6ae712b00abfa5aa5 100644 (file)
--- a/src/backend/access/transam/README
+++ b/src/backend/access/transam/README
@@ -324,7 +324,7 @@ changes much more often than its xid, having GetSnapshotData look at xmins
 can lead to a lot of unnecessary cacheline ping-pong.  Instead
 GetSnapshotData updates approximate thresholds (one that guarantees that all
 deleted rows older than it can be removed, another determining that deleted
-rows newer than it can not be removed). GlobalVisTest* uses those threshold
+rows newer than it can not be removed). GlobalVisTest* uses those thresholds
 to make invisibility decision, falling back to ComputeXidHorizons if
 necessary.