DOC: fix cookbook warnings

...Classification/app/otbClassificationMapRegularization.cxx

...cations/AppClassification/app/otbKMeansClassification.cxx

...tions/AppClassification/app/otbMultiImageSamplingRate.cxx

...lications/AppClassification/app/otbOGRLayerClassifier.cxx

...tions/AppClassification/app/otbPolygonClassStatistics.cxx

...plications/AppClassification/app/otbSOMClassification.cxx

...lications/AppClassification/app/otbSampleAugmentation.cxx

...Applications/AppClassification/app/otbSampleSelection.cxx

...pplications/AppClassification/app/otbVectorClassifier.cxx

...cations/AppClassification/include/otbTrainSharkKMeans.hxx

...ications/AppClassification/include/otbTrainVectorBase.hxx

...ions/AppDescriptors/app/otbHomologousPointsExtraction.cxx

...ionalityReduction/app/otbTrainDimensionalityReduction.cxx

...onalityReduction/app/otbVectorDimensionalityReduction.cxx

Modules/Applications/AppEdge/app/otbEdgeExtraction.cxx

Modules/Applications/AppFiltering/app/otbSmoothing.cxx

...cations/AppHyperspectral/app/otbHyperspectralUnmixing.cxx

...lications/AppImageUtils/app/otbMultiResolutionPyramid.cxx

Modules/Applications/AppImageUtils/app/otbPixelValue.cxx

Modules/Applications/AppImageUtils/app/otbTileFusion.cxx