remove prerelease from cache article

[Rick-Anderson]

Description

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Page URL

https://learn.microsoft.com/en-us/aspnet/core/performance/caching/hybrid?view=aspnetcore-9.0

Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/performance/caching/hybrid.md

Document ID

fdd3c6f2-c3f4-6fc7-0928-0b18ba9297cf

Article author

@tdykstra

Related Issues

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Associated WorkItem - 345247

[tdykstra]

The prerelease note needs to stay in place; hybrid cache is not GA with the rest of ASP.NET Core.