`UseStopRemover` parameter in TextFeaturizer does not make sense.

[zeahmed]

machinelearning/src/Microsoft.ML.Transforms/Text/TextFeaturizingEstimator.cs

Line 157 in 5746ec9

public bool UseStopRemover { get; set; } = false;

I think it should be renamed to UseStopWordRemover? Xml comments need to be updated to too.