Fix rarely-run test for message wording change

fixup for 2e6a8047f0

Reported-by: Nazir Bilal Yavuz <byavuz81@gmail.com>

src/test/modules/xid_wraparound/t/002_limits.pl

@@ -103,7 +103,7 @@ $ret = $node->psql(
 	stderr => \$stderr);
 like(
 	$stderr,
-	qr/ERROR:  database is not accepting commands that assign new XIDs to avoid wraparound data loss in database "postgres"/,
+	qr/ERROR:  database is not accepting commands that assign new transaction IDs to avoid wraparound data loss in database "postgres"/,
 	"stop-limit");
 
 # Finish the old transaction, to allow vacuum freezing to advance