Apply new format to snippets and template

snippets/differenceWith.md

@@ -5,7 +5,7 @@ tags: array,function,intermediate
 
 Filters out all values from an array for which the comparator function does not return `true`.
 
-Use `Array.prototype.filter()` and `Array.prototype.findIndex()` to find the appropriate values.
+- Use `Array.prototype.filter()` and `Array.prototype.findIndex()` to find the appropriate values.
 
 ```js
 const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);