Update README.md (#20292)

Author: Rick-Anderson

README.md

@@ -1,6 +1,6 @@
 # ASP.NET Core Docs
 
-This repository contains the conceptual ASP.NET Core documentation hosted at [docs.microsoft.com/aspnet/core](https://docs.microsoft.com/aspnet/core). See the [Contributing Guide](CONTRIBUTING.md) and the [issues list](https://github.com/dotnet/AspNetCore.Docs/issues) if you would like to help.
+This repository contains the conceptual ASP.NET Core documentation hosted at [docs.microsoft.com/aspnet/core](https://docs.microsoft.com/aspnet/core/getting-started). See the [Contributing Guide](CONTRIBUTING.md) and the [issues list](https://github.com/dotnet/AspNetCore.Docs/issues) if you would like to help.
 
 API documentation changes are made in the [AspNetApiDocs repository](https://github.com/dotnet/AspNetApiDocs) against the triple slash `///` comments.