test: fix the arguments order in assert.strictEqual

PR-URL: nodejs#24626
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Shingo Inoue <leko.noor@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

test/parallel/test-http-request-end.js

@@ -35,7 +35,7 @@ const server = http.Server(function(req, res) {
   });
 
   req.on('end', function() {
-    assert.strictEqual(expected, result);
+    assert.strictEqual(result, expected);
     server.close();
     res.writeHead(200);
     res.end('hello world\n');