Fix typo in hint.rs

[noiob]

No description provided.

[Cobrand]

I'm surprised no one noticed this before. Does this patch actually fixes the "VIDEO_MINIMIZE_ON_FOCUS_LOSS" behavior? Or does it work anyway?

I'm kinda divided on what to do here, renaming the static str is obviously fine because that's what it should be, but renaming everything else will be a serious breaking change for just one letter (and it still makes sense with the old version), but if it didn't work in the first place, I doubt anyone will notice since nobody but you used this before.

[noiob]

No, it didn't work before this patch. Just using sdl2::hint::set("SDL_VIDEO_MINIMIZE_ON_FOCUS_LOSS", "0"); instead did work, though, and I assume that anyone who stumbled over this probably used that as a workaround.

[Cobrand]

Either they used a workaround, or left it as it is and didn't notice that it didn't work. Would you mind adding an entry in the changelog for 0.32?

[noiob]

Woops, editing the .md file in Typora changed the indentation on some things, should I change that back?

[Cobrand]

No it's fine, thanks 👍