message: Update core_containers example
diff: @@ -273,8 +273,9 @@ void demoArrayDevice()
  axom::Array<int, 1, axom::MemorySpace::Host> C_host = C_device;
  std::cout << "Array C_host = " << C_host << std::endl;
  - // Since by default allocations happen in host memory, we could have also used a dynamic array (the default)
  - axom::Array<int> C_dynamic = C_device;
  + // We can also use a dynamic array, if we specify an allocator ID for host memory in the copy constructor.
  + int host_alloc_id = axom::getDefaultAllocatorID();
  + axom::Array<int> C_dynamic (C_device, host_alloc_id);
  std::cout << "Array C_dynamic = " << C_dynamic << std::endl;
  // _cuda_array_call_end
  