@@ -226,7 +226,7 @@ const menuConfig = {
 cancellable: true
 }
 
-function createMenu(menuConfig) {
+function createMenu(config) {
 // ...
 }
 
@@ -1699,14 +1699,14 @@ Promises are a built-in global type. Use them!
 
 **Bad:**
 ```javascript
-require('request').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin', function(err, response) {
-if (err) {
-console.error(err);
+require('request').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin', (requestErr, response) => {
+if (requestErr) {
+console.error(requestErr);
 }
 else {
-require('fs').writeFile('article.html', response.body, function(err) {
-if (err) {
-console.error(err);
+require('fs').writeFile('article.html', response.body, (writeErr) => {
+if (writeErr) {
+console.error(writeErr);
 } else {
 console.log('File written');
 }