Replaced Jupyter badge with .NET Interactive badge #545

[mgnslndh]

This is a fix for #545.

Do you want the updated .PDN? Perhaps it could be added to a new folder in the root /Assets or /Branding?

Please add the hacktoberfest-accepted label to this PR if you find it useful.

[WhiteBlackGoose]

Nice, but where did you take that notebook from?

[mgnslndh]

The notebook is from the dotnet/interactive repo that you linked in the description.

[WhiteBlackGoose]

Ah, I see. Are we allowed to use it? Do we need to credit it somewhere?

[mgnslndh]

The repo is licensed under MIT so I guess we're good if we give them credit where that makes sense.

[mgnslndh]

Since AngouriMath is a library I think that attribution should be part of the documentation.

[WhiteBlackGoose]

For future reference: we reference .NET Interactive here.

[WhiteBlackGoose]

Thanks