Update snippet descriptions

snippets/countWeekDaysBetween.md

@@ -8,6 +8,7 @@ Returns the weekday count between two dates.
 - Use `Array.from()` to construct an array with `length` equal to the number of days between `startDate` and `endDate`.
 - Use `Array.prototype.reduce()` to iterate over the array, checking if each date is a weekday and incrementing `count`.
 - Update `startDate` with the next day each loop using `Date.getDate()` and `Date.setDate()` to advance it by one day.
+- **NOTE:** Does not take official holidays into account.
 
 ```js
 const countWeekDaysBetween = (startDate, endDate) =>