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/throttle.md

@@ -3,7 +3,7 @@
 Creates a throttled function that only invokes the provided function at most once per every `wait` milliseconds
 
 Use `setTimeout()` and `clearTimeout()` to throttle the given method, `fn`.
-Use `Function.apply()` to apply the `this` context to the function and provide the necessary `arguments`.
+Use `Function.prototype.apply()` to apply the `this` context to the function and provide the necessary `arguments`.
 Use `Date.now()` to keep track of the last time the throttled function was invoked.
 Omit the second argument, `wait`, to set the timeout at a default of 0 ms.