message: Add info to cmakelists documentation
diff: # TBB_DIR needs to be set to the path where the TBBConfig.cmake files are located.
  # Without this, we'll have to assume that TBB needs to be located using the ONEAPI_ROOT variable
  # We can also allow users to specify NOVELRT_TBB_PATH which should be the "tbb" folder inside of
  -# the oneAPI installation.
  +# the oneAPI installation - this is the equivalent of TBBROOT as well.
  message(STATUS "Locating oneTBB")
  if(NOT DEFINED TBB_DIR)
  