loader: Update documentation to remove editing comments. Also better describe layer requirements for layers which creat new dispatchable objects.
loader: Update documentation to remove editing comments.
Also better describe layer requirements for layers which creat new dispatchable
objects.

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools