[docs] Report bugs on the leaps year

Dear Sir/Madam, [cid:image002.png@01D4AA81.1B676110] I accidentally found out that for years 1700, 1800, and 1900, they should be leaps year but then it shows that it has 28 days on February. Best Regards, Sheou Shuang. Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10