test: fixed strictEqual arguments order

Fixes usage of strictEqual arguments order in
test/parallel/test-process-wrap.js

Part of Node+JS Interactive 2018 Code & Learn

PR-URL: #23576
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

test/parallel/test-process-wrap.js

@@ -38,8 +38,8 @@ p.onexit = function(exitCode, signal) {
   p.close();
   pipe.readStart();
 
-  assert.strictEqual(0, exitCode);
-  assert.strictEqual('', signal);
+  assert.strictEqual(exitCode, 0);
+  assert.strictEqual(signal, '');
 
   processExited = true;
 };