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/truthCheckCollection.md

@@ -2,7 +2,7 @@
 
 Checks if the predicate (second argument) is truthy on all elements of a collection (first argument).
 
-Use `Array.every()` to check if each passed object has the specified property and if it returns a truthy value.
+Use `Array.prototype.every()` to check if each passed object has the specified property and if it returns a truthy value.
 
 ```js
 const truthCheckCollection = (collection, pre) => collection.every(obj => obj[pre]);