This is basically just a font difference. The angular version (in the text of your link) is the more typewritten style, while the version in the stroke order gr

This is basically just a font difference. The angular version (in the text of your link) is the more typewritten style, while the version in the stroke order graph is the more handwritten style. It's roughly analogous to the way "g" would usually descend on the right when written by hand, but descends on the left in most typefaces.