Merge "Docs: Updates NDK samples page and Vulkan landing page for launch." into mnc-docs am: a5f673f am: 9da6e91
am: 1373b2e

* commit '1373b2e8d1490f7625915be1966256158ae0aa80':
  Docs: Updates NDK samples page and Vulkan landing page for launch.

Change-Id: I447eca61cd63d5fec7aa781ab97702639cfd3120