Update snippet descriptions

snippets/pull.md

@@ -6,7 +6,8 @@ tags: array,intermediate
 Mutates the original array to filter out the values specified.
 
 - Use `Array.prototype.filter()` and `Array.prototype.includes()` to pull out the values that are not needed.
-- Use `Array.prototype.length = 0` to mutate the passed in an array by resetting it's length to zero and `Array.prototype.push()` to re-populate it with only the pulled values.
+- Set `Array.prototype.length` to mutate the passed in an array by resetting its length to `0`.
+- Use `Array.prototype.push()` to re-populate it with only the pulled values.
 
 ```js
 const pull = (arr, ...args) => {