Update script link

[adegeo]

Summary

Update the download link for the .NET Install Script.

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Internal previews

📄 File	🔗 Preview link
docs/core/install/linux-scripted-manual.md	Install .NET on Linux by using an install script or by extracting binaries
docs/core/install/macos.md	Install .NET on macOS
docs/core/install/windows.md	"Install .NET on Windows"
docs/core/tools/dotnet-install-script.md	dotnet-install scripts reference
docs/devops/dotnet-cli-and-continuous-integration.md	Use the .NET SDK in continuous integration (CI) environments
docs/iot/deployment.md	docs/iot/deployment

[adegeo]

Cancelled!