Update snippet descriptions

snippets/zip.md

@@ -3,11 +3,11 @@ title: zip
 tags: array,intermediate
 ---
 
-Creates an array of elements, grouped based on the position in the original arrays.
+Creates an array of elements, grouped based on their position in the original arrays.
 
-- Use `Math.max.apply()` to get the longest array in the arguments.
-- Creates an array with that length as return value and use `Array.from()` with a map-function to create an array of grouped elements.
-- If lengths of the argument-arrays vary, `undefined` is used where no value could be found.
+- Use `Math.max()`, `Function.prototype.apply()` to get the longest array in the arguments.
+- Create an array with that length as return value and use `Array.from()` with a mapping function to create an array of grouped elements.
+- If lengths of the argument arrays vary, `undefined` is used where no value could be found.
 
 ```js
 const zip = (...arrays) => {