Hi Sis, you mapped two residential area and they are overlapped each other. For avoiding this overlap, you can select these two residential area
and click Join overlapping Areas from Tools tab or click (shift + J). So, it will combine as one polygon. Thanks for your contribution to myOSM community.
you can check the area from this link: https://www.openstreetmap.org/way/1305279297#map=19/16.45550/95.75598