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/coalesce.md

@@ -2,7 +2,7 @@
 
 Returns the first non-null/undefined argument.
 
-Use `Array.find()` to return the first non `null`/`undefined` argument.
+Use `Array.prototype.find()` to return the first non `null`/`undefined` argument.
 
 ```js
 const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));