Update examples/buffer.html
Update examples/buffer.html

Fixed buffer sample page
weftio/jsts,mikeatlas/jsts,kolosov-sergey/jsts,yeyan/jsts,Septima/jsts,Septima/jsts,Septima/jsts,mikeatlas/jsts,kolosov-sergey/jsts,Geode/jsts,Geode/jsts,mikeatlas/jsts,weftio/jsts,nachoalthabe/cluster_poligonal,yeyan/jsts,Geode/jsts,weftio/jsts,kolosov-sergey/jsts