Refs #10659 Update some Refl algorithm categories

.../Framework/Algorithms/src/CreateTransmissionWorkspace.cpp

...antid/Framework/Algorithms/src/PolarizationCorrection.cpp

...id/Framework/Algorithms/src/ReflectometryReductionOne.cpp

...ework/Algorithms/src/SpecularReflectionCalculateTheta.cpp

...work/Algorithms/src/SpecularReflectionPositionCorrect.cpp

...Mantid/Framework/MDEvents/src/ConvertToReflectometryQ.cpp

...honInterface/plugins/algorithms/FindReflectometryLines.py