improve docstring for tlgu test
improve docstring for tlgu test

kylepjohnson/cltk,mbevila/cltk,coderbhupendra/cltk,LBenzahia/cltk,cltk/cltk,marpozzi/cltk,TylerKirby/cltk,D-K-E/cltk,eamonnbell/cltk,diyclassics/cltk,LBenzahia/cltk,TylerKirby/cltk