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/intersectionWith.md

@@ -2,7 +2,7 @@
 
 Returns a list of elements that exist in both arrays, using a provided comparator function.
 
-Use `Array.filter()` and `Array.findIndex()` in combination with the provided comparator to determine intersecting values.
+Use `Array.prototype.filter()` and `Array.prototype.findIndex()` in combination with the provided comparator to determine intersecting values.
 
 ```js
 const intersectionWith = (a, b, comp) => a.filter(x => b.findIndex(y => comp(x, y)) !== -1);