languages.yml: add Terra
languages.yml: add Terra

JJ/linguist,pchaigno/linguist,osorgin/linguist,sebgod/linguist,tschf/linguist,meunierfrederic/octocatlinguist,c-lipka/linguist,ppaulweber/github-linguist,MahmoudFayed/linguist,pchaigno/linguist,osorgin/linguist,yyx990803/linguist,meunierfrederic/octocatlinguist,github/linguist,R4PaSs/linguist,stanhu/linguist,R4PaSs/linguist,steventhanna/linguist,yyx990803/linguist,ppaulweber/github-linguist,MahmoudFayed/linguist,sebgod/linguist,mwpastore/linguist,erkyrath/linguist,stanhu/linguist,christop/linguist,jtbandes/linguist,github/linguist,c-lipka/linguist,MostAwesomeDude/linguist,pchaigno/linguist,sebgod/linguist,christop/linguist,PsichiX/linguist,yyx990803/linguist,sebgod/linguist,jtbandes/linguist,pchaigno/linguist,github/linguist,steventhanna/linguist,meunierfrederic/octocatlinguist,yyx990803/linguist,stanhu/linguist,erkyrath/linguist,erkyrath/linguist,mwpastore/linguist,PsichiX/linguist,erkyrath/linguist,JJ/linguist,JJ/linguist,github/linguist,stanhu/linguist,MostAwesomeDude/linguist,JJ/linguist,tschf/linguist