test: fix assertion argument order in test-https-agent.js

PR-URL: #28383
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-https-agent.js

@@ -68,5 +68,5 @@ server.listen(0, function() {
 
 
 process.on('exit', function() {
-  assert.strictEqual(N * M, responses);
+  assert.strictEqual(responses, N * M);
 });