update WFS version support in docs
update WFS version support in docs

daf/OWSLib,daf/OWSLib,jaygoldfinch/OWSLib,datagovuk/OWSLib,geographika/OWSLib,kalxas/OWSLib,KeyproOy/OWSLib,Jenselme/OWSLib,dblodgett-usgs/OWSLib,geopython/OWSLib,datagovuk/OWSLib,b-cube/OWSLib,tomkralidis/OWSLib,datagovuk/OWSLib,QuLogic/OWSLib,daf/OWSLib,menegon/OWSLib,kwilcox/OWSLib,jachym/OWSLib,robmcmullen/OWSLib,jaygoldfinch/OWSLib,bird-house/OWSLib,ocefpaf/OWSLib,mbertrand/OWSLib,JuergenWeichand/OWSLib,gfusca/OWSLib