ASP.NET Built-in Metrics: Delete and forward to new location

[wadepickett]

Summary

• The ASP.NET Build-In Metrics topic has been removed in and, the TOC updated to point to its new location in the aspnetcore.docs repository. (The file was moved to there in a previous PR).
• Redirection was added to point to the new location of the ASP.NET Core Metrics topic.

Fixes #45580
Fixes dotnet/AspNetCore.Docs#35109

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Internal previews

📄 File	🔗 Preview link
docs/core/diagnostics/built-in-metrics.md	docs/core/diagnostics/built-in-metrics
docs/navigate/tools-diagnostics/toc.yml	docs/navigate/tools-diagnostics/toc

[wadepickett]

Closing and reopening to attempt re-build since the OPS status checker seems to be having an existential crisis, absorbed in an endless loop of self-reflection...

[gewarren]

Can you make this a contextual TOC link? TOC links aren't supposed to take you away from the current TOC.

[wadepickett]

Thanks @gewarren, good point. If by "contextual TOC link" you mean linking to a topic in this repository first so that the user then hits a link again in that topic to go to the eventual topic in the other repo, I guess that would either be a link to the Metrics > Overview just above this one (which feels a little too circular), or creating a new topic in this repo just to have a link to the actual topic (which we also avoid unless we really have to.)

It looks like to get around this problem for the EF metrics, that the EF metrics link was not provided in the TOC and the Metrics > Overview was just relied on where it has a link to the metric topic in the EF repo. So, I will go that route unless there is something you feel that was better to do.

[wadepickett]

Removed the ASP.NET Core metrics link to rely on The Build-in metrics > Overview link instead in the TOC, as the EF metrics does, to avoid linking directly to the metrics topic in a different repo and TOC.

[gewarren]

I think we should keep this TOC entry. The contextual TOC link should look like this:

href: /aspnet/core/log-mon/metrics/built-in?toc=/dotnet/navigate/tools-diagnostics/toc.json&bc=/dotnet/breadcrumb/toc.json

[gewarren]

I left a suggestion with how a contextual TOC link works (you can also read about them in the contributor guide).

[wadepickett]

OH! You wanted a breadcrumb! Sorry, I was not catching on. Thanks!