Fixed warning from labels of Projection coordinates

regtest/dimred/rt-mds/analysis.0.embed.reference

regtest/dimred/rt-mds/analysis.0.list_embed.reference

regtest/dimred/rt-mds/embed.reference

regtest/dimred/rt-mds/list_embed.reference

regtest/dimred/rt-mds/plumed.dat

regtest/dimred/rt-mds2/analysis.0.embed.reference

regtest/dimred/rt-mds2/analysis.0.list_embed.reference

regtest/dimred/rt-mds2/embed.reference

regtest/dimred/rt-mds2/list_embed.reference

regtest/dimred/rt-smap-osample/projections.reference

regtest/dimred/rt-smap-pointwise/smap.reference

regtest/dimred/rt-smap-smacof/smap.reference

regtest/dimred/rt-smap1/smap.reference

src/dimred/DimensionalityReductionBase.cpp

src/dimred/ProjectNonLandmarkPoints.cpp

user-doc/Analysis.txt