Fix typo.

Masahiko Sawada

Discussion: http://postgr.es/m/CAD21AoCq_QG6UEo6yb-purmhLQjDLsCA2_B+8Wh3ah9P2-XmrQ@mail.gmail.com

src/backend/access/transam/xact.c

@@ -1164,7 +1164,7 @@ RecordTransactionCommit(void)
 		 * vacuum.  Hence we emit a bespoke record for the invalidations. We
 		 * don't want to use that in case a commit record is emitted, so they
 		 * happen synchronously with commits (besides not wanting to emit more
-		 * WAL recoreds).
+		 * WAL records).
 		 */
 		if (nmsgs != 0)
 		{