Apply new format to snippets and template

snippets/mapValues.md

@@ -5,8 +5,8 @@ tags: object,function,intermediate
 
 Creates an object with the same keys as the provided object and values generated by running the provided function for each value.
 
-Use `Object.keys(obj)` to iterate over the object's keys.
-Use `Array.prototype.reduce()` to create a new object with the same keys and mapped values using `fn`.
+- Use `Object.keys(obj)` to iterate over the object's keys.
+- Use `Array.prototype.reduce()` to create a new object with the same keys and mapped values using `fn`.
 
 ```js
 const mapValues = (obj, fn) =>
@@ -22,4 +22,4 @@ const users = {
   pebbles: { user: 'pebbles', age: 1 }
 };
 mapValues(users, u => u.age); // { fred: 40, pebbles: 1 }
-```
+```