layers: Update layer details doc for new tests
layers: Update layer details doc for new tests

Change-Id: I9a0cca05f387c291494edf6970e0dd34d5922fe6

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers