Updated examples

Removed duplicate and unnecessary examples.

snippets/shuffle.md

@@ -17,6 +17,5 @@ const shuffle = ([...arr]) => {
 
 ```js
 const foo = [1, 2, 3];
-shuffle(foo); // [2,3,1]
-console.log(foo); // [1,2,3]
+shuffle(foo); // [2,3,1], foo = [1,2,3]
 ```