[Rachana] Fix the wrong rendering of dotrephy1y1

Removed dotreph anchorpoints from y1 and y1y1. Insrted new glyphs for
dotrephy1 and dotrephy1y1.
[Rachana] Fix wrong rendering of dotrephv1v1

Removed dotreph anchor points from v1 and v1v1. Added glyphs for dotrephv1
and dotrphv1v1.