doc string adjustment
doc string adjustment

sreichholf/python-coherence,ismaelgaudioso/Coherence,unintended/Cohen,sreichholf/python-coherence,coherence-project/Coherence,opendreambox/python-coherence,coherence-project/Coherence,furbrain/Coherence,furbrain/Coherence,opendreambox/python-coherence,unintended/Cohen,ismaelgaudioso/Coherence