@Sajeevini; yes, good changeset comments are needed. And if you looked at my profile (bot on OSM and HOT) you'd learned, I am all for it.

In this case the only thing I did was orthogonalised 1 building; probably as part of a demo for a HOT Mapathon or some other form of QA sweep. 

Not sure if reviewing a changeset for comments with 1 (pretty obvious and very minor change) is the best impact you can make; expecially in this area of the world.