Removing duplicated "and" (#52826)

Minor change to "fix" that sentence... not really an issue but it makes more sense like this

CONTRIBUTING.md

@@ -5,7 +5,7 @@ You can contribute to .NET Runtime with issues and PRs. Simply filing issues for
 
 ## Contribution "Bar"
 
-Project maintainers will merge changes that improve the product significantly and broadly and that align with the [.NET Roadmap](https://github.com/dotnet/core/blob/master/roadmap.md).
+Project maintainers will merge changes that improve the product significantly and broadly align with the [.NET Roadmap](https://github.com/dotnet/core/blob/master/roadmap.md).
 
 Maintainers will not merge changes that have narrowly-defined benefits, due to compatibility risk. The .NET Core codebase is used by several Microsoft products (for example, ASP.NET Core, .NET Framework 4.x, Windows Universal Apps) to enable execution of managed code. Other companies are building products on top of .NET, too. We may revert changes if they are found to be breaking.