Update snippet descriptions

snippets/quarterOfYear.md

@@ -7,13 +7,13 @@ Returns the quarter and year to which the supplied date belongs to.
 
 - Use `Date.prototype.getMonth()` to get the current month in the range (0, 11), add `1` to map it to the range (1, 12).
 - Use `Math.ceil()` and divide the month by `3` to get the current quarter.
-- Use `Date.prototype.getFullYear()` to get the year from the given date.
+- Use `Date.prototype.getFullYear()` to get the year from the given `date`.
 - Omit the argument, `date`, to use the current date by default.
 
 ```js
 const quarterOfYear = (date = new Date()) => [
   Math.ceil((date.getMonth() + 1) / 3),
-  date.getFullYear(),
+  date.getFullYear()
 ];
 ```