test: fixed the arguments order in assert.strictEqual

PR-URL: nodejs#24414
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ouyang Yadong <oyydoibh@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>

test/internet/test-dns.js

@@ -693,7 +693,7 @@ req.oncomplete = function(err, domains) {
 process.on('exit', function() {
   console.log(`${completed} tests completed`);
   assert.strictEqual(running, false);
-  assert.strictEqual(expected, completed);
+  assert.strictEqual(completed, expected);
   assert.ok(getaddrinfoCallbackCalled);
 });