Update description adding template literal explanation

snippets/toDecimalMark.md

@@ -4,6 +4,8 @@ Convert a float-point arithmetic to the [Decimal mark](https://en.wikipedia.org/
 
 Use `toString()` to convert the float `num` to a string, then use regex to separate every three characters of the integer part with a comma.
 
+Use [Ttemplate Literals](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals) to return joined parts.
+
  ```js
 const toDecimalMark = (num) => {
   let numberParts = num.toString().split('.')