Update dotnet-counters CLI option to supply counter provider

[wadepickett]

Description

dotnet-counters released a breaking change in v9.0.621003 should be accounted for in the dotnet counters example for these two articles:
aspnetcore//signalr/diagnostics.md
aspnetcore/grpc/diagnostics.md

Verify if there are any other examples to update in the doc set.

"Previously dotnet-counters allowed specifying a list of space separated counters prior to the -- token in collect/monitor mode. Counters must now be supplied explicitly in the --counters option as a list of comma-separated values." - https://github.com/dotnet/diagnostics/releases/tag/v9.0.621003

Page URL

https://learn.microsoft.com/en-us/aspnet/core/signalr/diagnostics?view=aspnetcore-9.0

Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/signalr/diagnostics.md

Document ID

3e302985-8504-d333-3222-ab8da8902da2

Platform Id

4962a49e-a98e-e24e-f1ae-e3d6d5775d93

Article author

@wadepickett

Metadata

• ID: cef32cc5-6a1f-25c9-0d89-a984a3f68851
• PlatformId: 4962a49e-a98e-e24e-f1ae-e3d6d5775d93
• Service: aspnet-core
• Sub-service: aspnetcore-signalr

Related Issues

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Associated WorkItem - 444291