Update GitHub issue template config #82871
Description
https://github.com/dotnet/roslyn/blob/main/.github/ISSUE_TEMPLATE/config.yml redirects to https://github.com/dotnet/roslyn-analyzers for CAxxxx rule issues. But the readme of that repo states that analyzers were moved to either https://github.com/dotnet/sdk or https://github.com/dotnet/roslyn