Change descriptions in chocolate-doom-git

The latest master branch has changes that add support for Doom 1.666,
1.7, and 1.8, the description about only reproducing the behavior of
1.9 is thus inaccurate. It also sets a precedence that the other three
games might gain similar support in the future.

Also, it was inaccurate for Chocolate Strife in the first place:
<@Quasar`> choco strife supports 1.2 and 1.31.