Avoid confusing prototype methods for static methods

Correct: `Array.from()` (it’s a static method)
Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method)

This patch uses the common `#` syntax to denote `.prototype.`.

snippets/partition.md

@@ -2,8 +2,8 @@
 
 Groups the elements into two arrays, depending on the provided function's truthiness for each element.
 
-Use `Array.reduce()` to create an array of two arrays.
-Use `Array.push()` to add elements for which `fn` returns `true` to the first array and elements for which `fn` returns `false` to the second one.
+Use `Array.prototype.reduce()` to create an array of two arrays.
+Use `Array.prototype.push()` to add elements for which `fn` returns `true` to the first array and elements for which `fn` returns `false` to the second one.
 
 ```js
 const partition = (arr, fn) =>