DOC: fix doxygen errors

Code/BasicFilters/otbKeyPointDensityImageFilter.h

Code/BasicFilters/otbNDVIDataNodeFeatureFunction.h

Code/BasicFilters/otbSpectralAngleDataNodeFeatureFunction.h

Code/ChangeDetection/otbCrossCorrelation.h

Code/ChangeDetection/otbLHMI.h

Code/Common/otbDataNodeImageFunction.h

...CooccurrenceMatrixAdvancedTextureCoefficientsCalculator.h

Code/FeatureExtraction/otbLocalHistogramImageFunction.h

Code/FeatureExtraction/otbSiftFastImageFilter.h

Code/Learning/otbSOMMap.txx

Code/Learning/otbSOMWithMissingValue.h

Code/Learning/otbSOMbasedImageFilter.h

Code/MultiScale/otbWaveletPacketTransform.h

Code/MultiTemporal/otbTimeSeriesLeastSquareFittingFunctor.h

Code/Radiometry/otbVegetationIndicesFunctor.h

...Polarimetry/otbMuellerToReciprocalCovarianceImageFilter.h

Code/SpatialReasoning/otbRCC8GraphFileReader.txx

Code/SpatialReasoning/otbRCC8GraphFileWriter.txx