Update fibonacci.md

snippets/fibonacci.md

@@ -7,6 +7,6 @@ Use `Array.reduce()` to add values into the array, using the sum of the last two
 
 ```js
 const fibonacci = n =>
-  Array.from({ length: n}).map(v => 0).reduce((acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i), []);
+  Array.from({ length: n}).reduce((acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i), []);
 // fibonacci(5) -> [0,1,1,2,3]
 ```