Style guide violation

docs/js-core-1/week-4/lesson.md

@@ -163,10 +163,10 @@ Did you notice how calling the concat method did not change `arr`? This is becau
 If you want to use the array returned by calling `.concat()` you should store it in a new variable.
 
 ```js
-const arr = [1, 2, 3];
-const newArr = arr.concat(4);
+const array = [1, 2, 3];
+const newArray = array.concat(4);
 
-console.log(newArr); // logs [1, 2, 3, 4]
+console.log(newArray); // logs [1, 2, 3, 4]
 ```
 
 ### `.slice()`

docs/workshops/js-testing-workshop.md

@@ -51,7 +51,7 @@ _Unit testing_ though is always the responsibility of the Developer, and it is a
 > Discussion: What is testable code?
 
 ```js
-var result;
+let result;
 
 function getMentorInfo(mentors, name) {
   var greeting = "Hello ";