Update doc links

CONTRIBUTING.md

@@ -25,7 +25,7 @@ You should install the version specified in `global.json` or a later version wit
 the same major.minor.Bxx "hundreds" band.
 For example if 2.2.300 is specified, you may install 2.2.300, 2.2.301, or 2.2.310
 while the 2.2.400 version would not be considered compatible by .NET SDK.
-See [.NET Core Versioning](https://docs.microsoft.com/en-us/dotnet/core/versions/) for more information.
+See [.NET Core Versioning](https://docs.microsoft.com/dotnet/core/versions/) for more information.
 
 ## Package restore
 
@@ -39,4 +39,4 @@ This repository can be built on Windows, Linux, and OSX.
 
 Building, testing, and packing this repository can be done by using the standard dotnet CLI commands (e.g. `dotnet build`, `dotnet test`, `dotnet pack`, etc.).
 
-[pwsh]: https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell?view=powershell-6
+[pwsh]: https://docs.microsoft.com/powershell/scripting/install/installing-powershell?view=powershell-6

README.md

@@ -12,7 +12,7 @@
 
 * Follow the best and simplest patterns of build, pack and test with dotnet CLI.
 * Init script that installs prerequisites and auth helpers, supporting both non-elevation and elevation modes.
-* Static analyzers: [FxCop](https://docs.microsoft.com/en-us/visualstudio/code-quality/fxcop-analyzers?view=vs-2019) and [StyleCop](https://github.com/DotNetAnalyzers/StyleCopAnalyzers)
+* Static analyzers: default [Code Analysis](https://docs.microsoft.com/dotnet/fundamentals/code-analysis/overview) and [StyleCop](https://github.com/DotNetAnalyzers/StyleCopAnalyzers)
 * Read-only source tree (builds to top-level bin/obj folders)
 * Auto-versioning (via [Nerdbank.GitVersioning](https://github.com/dotnet/nerdbank.gitversioning))
 * Builds with a "pinned" .NET Core SDK to ensure reproducible builds across machines and across time.