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/bifurcate.md

@@ -2,7 +2,7 @@
 
 Splits values into two groups. If an element in `filter` is truthy, the corresponding element in the collection belongs to the first group; otherwise, it belongs to the second group.
 
-Use `Array.reduce()` and `Array.push()` to add elements to groups, based on `filter`.
+Use `Array.prototype.reduce()` and `Array.prototype.push()` to add elements to groups, based on `filter`.
 
 ```js
 const bifurcate = (arr, filter) =>