Updated "Name" part in README

An Ostrich has never been achieved. Quoting Wikipedia:

> Ostrich
>    The single hole score of -5, or five under par. The only way this can occur is with a hole-in-one on a par 6, or two on a par 7. This score has never been achieved and it is unlikely that it ever will considering the dramatic length and rarity of holes over par 5.