Link to docs doesn't work for Span<byte>

[eerhardt]

Describe the bug

There's an awesome feature that when you display a type, it outputs the type's name and a hyperlink to the docs.

However, if you display the type Span<byte>, the URL isn't correct.

Did this error occur while using dotnet try or online?

• [ ] dotnet-try
• [x] .NET Jupyter Notebook
• [ ] online

What kind of error was it?

• [ ] User Interface (UI): For example the output never displayed
• [ ] Service Error: For example "The service is temporarily unavailable. We are working on it"
• [x] Other:

Screenshots

clicking that hyperlink brings me to:

https://docs.microsoft.com/en-us/dotnet/api/System.Span%601%5B%5BSystem.Byte,%20System.Private.CoreLib,%20Version=4.0.0.0,%20Culture=neutral,%20PublicKeyToken=7cec85d7bea7798e%5D%5D?view=netcore-3.0

Please complete the following:

• OS
  • [x] Windows 10
  • [ ] macOS
  • [ ] Linux (Please specify distro)
  • [ ] iOS
  • [ ] Android
• Browser
  • [x] Chrome
  • [ ] Edge
  • [ ] Safari

[jonsequitur]

This feature is an example of some of the ideas we have for using custom formatters for specific types. @BillWagner and I discussed expanding this to query docs.microsoft.com in order to more accurately locate the correct documentation.

[eerhardt]

It is an awesome feature BTW. Looking forward to more innovation in this space.