fix naming

snippets/tail-of-list.md

@@ -3,7 +3,7 @@
 Return `arr.slice(1)` if the array's `length` is more than `1`, otherwise return the whole array.
 
 ```js
-const tail = arr => arr.length > 1 ? arr.slice(1) : arr;
+const tailOfList = arr => arr.length > 1 ? arr.slice(1) : arr;
 // tail([1,2,3]) -> [2,3]
 // tail([1]) -> [1]
 ```