Update ASP.NET Core fundamentals DI doc to highlight Blazor

[tdykstra]

Description

See #34356

Page URL

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/dependency-injection?view=aspnetcore-9.0

Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/fundamentals/dependency-injection.md

Document ID

2251f557-dd3a-ec35-2558-6243337db009

Article author

@tdykstra

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