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 repository hosts the official Direct3D 12 headers. These headers are made a
 
 Additionally, this repository hosts several helpers for using these headers.
 
+Make sure that you visit the [DirectX Landing Page](https://devblogs.microsoft.com/directx/landing-page/) for more resources for DirectX developers.
+
 ## Directory Structure
 
 * `/`: Build files are available here for quick integration. CMake is provided, and can be referenced either via `subdirectory()` or after installation to a system location. Meson is also available for inclusion as a subproject/wrap.
@@ -58,4 +60,4 @@ This project has adopted the [Microsoft Open Source Code of Conduct](https://ope
 
 ## Trademarks
 
-This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow [Microsoft's Trademark & Brand Guidelines](https://www.microsoft.com/en-us/legal/intellectualproperty/trademarks/usage/general). Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.
+This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow [Microsoft's Trademark & Brand Guidelines](https://www.microsoft.com/en-us/legal/intellectualproperty/trademarks/usage/general). Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.