fix: removed , from task.md date data types

Author: zeel

1-js/05-data-types/11-date/8-format-date-relative/task.md

@@ -20,6 +20,6 @@ alert( formatDate(new Date(new Date - 30 * 1000)) ); // "30 sec. ago"
 
 alert( formatDate(new Date(new Date - 5 * 60 * 1000)) ); // "5 min. ago"
 
-// yesterday's date like 31.12.16, 20:00
+// yesterday's date like 31.12.16 20:00
 alert( formatDate(new Date(new Date - 86400 * 1000)) );
 ```