7.2 Simplify CoDa names

We may want to simplify the names of the transformed variables before plotting them in a biplot.

prot4_Shipwreck_2d <- simplify_coda_names(prot4_Shipwreck_2d)
prot4_Shipwreck_3d <- simplify_coda_names(prot4_Shipwreck_3d)