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/pullAtValue.md

@@ -2,9 +2,9 @@
 
 Mutates the original array to filter out the values specified. Returns the removed elements.
 
-Use `Array.filter()` and `Array.includes()` to pull out the values that are not needed.
-Use `Array.length = 0` to mutate the passed in an array by resetting it's length to zero and `Array.push()` to re-populate it with only the pulled values.
-Use `Array.push()` to keep track of pulled values
+Use `Array.prototype.filter()` and `Array.prototype.includes()` to pull out the values that are not needed.
+Use `Array.prototype.length = 0` to mutate the passed in an array by resetting it's length to zero and `Array.prototype.push()` to re-populate it with only the pulled values.
+Use `Array.prototype.push()` to keep track of pulled values
 
 ```js
 const pullAtValue = (arr, pullArr) => {