This fixes the .travis.yml
This fixes the .travis.yml

The latest .yml file's syntax wasn't valid, and no builds were triggered

KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples