benchmark: update iterations of benchmark/domain/domain-fn-args.js

Fixes: nodejs#50571
PR-URL: nodejs#51408
Reviewed-By: Chengzhong Wu <[email protected]>

Author: Lei Shi

benchmark/domain/domain-fn-args.js

@@ -4,7 +4,7 @@ const domain = require('domain');
 
 const bench = common.createBenchmark(main, {
   args: [0, 1, 2, 3],
-  n: [10],
+  n: [1e4],
 });
 
 const bdomain = domain.create();