Fix translation marker

This was erroneously removed in
55a70a0.

Author: petere

src/backend/commands/vacuumlazy.c

@@ -1341,7 +1341,7 @@ lazy_scan_heap(Relation onerel, int options, LVRelStats *vacrelstats,
 									"%u pages are entirely empty.\n",
 									empty_pages),
 					 empty_pages);
-	appendStringInfo(&buf, "%s.", pg_rusage_show(&ru0));
+	appendStringInfo(&buf, _("%s."), pg_rusage_show(&ru0));
 
 	ereport(elevel,
 			(errmsg("\"%s\": found %.0f removable, %.0f nonremovable row versions in %u out of %u pages",