Palm family is misspelled (Arecaceae, not Aracaceae)

Thanks a lot for putting together the BAAD!  The issue is that the palm family name (Arecaceae) is misspelled as Aracaceae.

I did this:
```
library(devtools)
devtools::install_github("richfitz/datastorr")
devtools::install_github("traitecoevo/baad.data")

baad <- baad.data::baad_data()

baad$data$family[baad$data$family=='Aracaceae' & !is.na(baad$data$family)]
```