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/forEachRight.md

@@ -2,7 +2,7 @@
 
 Executes a provided function once for each array element, starting from the array's last element.
 
-Use `Array.slice(0)` to clone the given array, `Array.reverse()` to reverse it and `Array.forEach()` to iterate over the reversed array.
+Use `Array.prototype.slice(0)` to clone the given array, `Array.prototype.reverse()` to reverse it and `Array.prototype.forEach()` to iterate over the reversed array.
 
 ```js
 const forEachRight = (arr, callback) =>