move mxFitFunctionMultigroup note about referring to fitfunction algebras to a less prominent place
move mxFitFunctionMultigroup note about referring to fitfunction algebras to a less prominent place

jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx