doc: update link to Windows DevX in mlx5 guide

[ upstream commit 5ddc8269192ca7aeec0bf903704c0385ebbd9e87 ]

The older link no longer works.

Signed-off-by: Ali Alnubani <alialnu@nvidia.com>
Acked-by: Tal Shnaiderman <talshn@nvidia.com>

doc/guides/nics/mlx5.rst

@@ -1425,7 +1425,7 @@ DevX SDK installation
 The DevX SDK must be installed on the machine building the Windows PMD.
 Additional information can be found at
 `How to Integrate Windows DevX in Your Development Environment
-<https://docs.mellanox.com/display/winof2v250/RShim+Drivers+and+Usage#RShimDriversandUsage-DevXInterface>`__.
+<https://docs.nvidia.com/networking/display/winof2v290/devx+interface>`_.
 
 Runtime Prerequisites
 ~~~~~~~~~~~~~~~~~~~~~