OSCAR page

[KZiemian]

I just want to notice few things about page, maybe one of maintainers what to give it a look.

On page the Julia 1.9.3 is called the newest release. I guess at one point update is needed.

[thofma]

Thanks. This will be fixed by oscar-system/oscar-website#326. Feel free to open PRs if you find some typos/outdated stuff.