Update README.md with link to DX Landing Page

Added link to the DirectX Landing Page at the top of this readme to make sure all DX-related components link back to our new single source of truth.

README.md

@@ -4,6 +4,8 @@ This repo contains the DirectX 12 Graphics samples that demonstrate how to build
 
 We invite you to join us at our [discord server](http://discord.gg/directx). See our [YouTube channel](https://www.youtube.com/MicrosoftDirectX12andGraphicsEducation) for tutorials, our [spec repo](https://microsoft.github.io/DirectX-Specs/) for engineering specs of our features and [devblogs](https://devblogs.microsoft.com/directx/) for blog posts. Follow us on Twitter [@DirectX12](https://twitter.com/directx12) for the latest! See the [related links](##-Related-links) section for our full list of DX12-related links.
 
+Finally, make sure that you visit the [DirectX Landing Page](https://devblogs.microsoft.com/directx/landing-page/) for more resources for DirectX developers.
+
 ## API Samples
 In the Samples directory, you will find samples that attempt to break off specific features and specific usage scenarios into bite-sized chunks. For example, the ExecuteIndirect sample will show you just enough about execute indirect to get started with that feature without diving too deep into multiengine whereas the nBodyGravity sample will delve into multiengine without touching on the execute indirect feature etc. By doing this, we hope to make it easier to get started with DirectX 12.
 
@@ -66,4 +68,4 @@ This project has adopted the [Microsoft Open Source Code of Conduct](https://ope
 * [D3D12 Residency Starter Library](https://github.com/Microsoft/DirectX-Graphics-Samples/tree/master/Libraries/D3DX12Residency)
 * [D3D12 MultiGPU Starter Library](https://github.com/Microsoft/DirectX-Graphics-Samples/tree/master/Libraries/D3DX12AffinityLayer)
 * [DirectX Tool Kit](https://github.com/Microsoft/DirectXTK12)
-* [D3DDred debugger extension](https://github.com/Microsoft/DirectX-Debugging-Tools)
+* [D3DDred debugger extension](https://github.com/Microsoft/DirectX-Debugging-Tools)