Update breadcrumb toc.yml to point to new hub page

[wadepickett]

Internal Review - see breadcrumb at top

Updating the breadcrumb/toc.yml so it points to the new hub page instead of the old one.

• I will remove the old unused hub page in a separate PR once this last reference to it is updated.
• The ASP.NET 4.x breadcrumb that point to the old hub page will also have to be changed in a separate PR.

[scottaddie]

I think the breadcrumb trail should go Docs > ASP.NET Core. It doesn't make much sense to me to have Docs > ASP.NET > ASP.NET Core if both ASP.NET and ASP.NET Core point to the same page. Thoughts, @wadepickett & @Rick-Anderson?

[Rick-Anderson]

@scottaddie agreed. @wadepickett can you do another PR and fix that?

[wadepickett]

Sorry @scottaddie , I merged a minute before your comment. Given .NET 5, would we instead go to this?

Docs > .NET > ASP.NET Core

".NET" would be the .NET hub page.

I agree on getting rid of the extra "ASP.NET". That never made sense to me.

[scottaddie]

@wadepickett No worries. Sorry I couldn't look at this sooner. I think your proposal could work well.