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/omitBy.md

@@ -2,8 +2,8 @@
 
 Creates an object composed of the properties the given function returns falsey for. The function is invoked with two arguments: (value, key).
 
-Use `Object.keys(obj)` and `Array.filter()`to remove the keys for which `fn` returns a truthy value.
-Use `Array.reduce()` to convert the filtered keys back to an object with the corresponding key-value pairs.
+Use `Object.keys(obj)` and `Array.prototype.filter()`to remove the keys for which `fn` returns a truthy value.
+Use `Array.prototype.reduce()` to convert the filtered keys back to an object with the corresponding key-value pairs.
 
 ```js
 const omitBy = (obj, fn) =>