Update data normalization mode comments (#6486)
Update data normalization mode comments (#6486)

* Update Data Normalization Mode enum descriptions

* Extend descriptions
AlexCatarino/Lean,QuantConnect/Lean,QuantConnect/Lean,QuantConnect/Lean,AlexCatarino/Lean,AlexCatarino/Lean,QuantConnect/Lean,AlexCatarino/Lean