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

diff --git a/src/backend/access/transam/README b/src/backend/access/transam/README
index 1edc8180c1284425fcdb4ec14893290afb054941..26fd77be2e2d764db08448c63565ba7bbe8c0e0f 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.