Comment out Linux cert support until it's released

[Rick-Anderson]

Description

See this comment

See #33221

cc @tdykstra

Page URL

https://learn.microsoft.com/en-us/aspnet/core/security/enforcing-ssl?branch=main&branchFallbackFrom=pr-en-us-33221&view=aspnetcore-8.0&tabs=visual-studio%2Clinux-sles

Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/security/enforcing-ssl.md

Document ID

12ca0b9a-2638-a4ce-c45f-d4579c83dafb

Article author

@tdykstra

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Associated WorkItem - 292556

[amcasey]

@Rick-Anderson What do I need to do for this? Revert my change and stage a new PR restoring it?