Rear mudguard fix, Xiaomi Mijia M365 washer

This is a fix for Xiaomi Mijia M365 electric scooter rear mudguard. This simple fix prevent the rupture and replacment of the back rear fender. The original design have a structural weakness at the level of the rear fender fixing. Print 3 washers and fill the loose space between the fender and scooter body to stronger the tightening between the two parts and prevent a break.