Update .environment.yml for ReadTheDocs build
Update .environment.yml for ReadTheDocs build

tomalrussell/smif,nismod/smif,tomalrussell/smif,nismod/smif,willu47/smif,nismod/smif,willu47/smif,tomalrussell/smif,willu47/smif,willu47/smif,tomalrussell/smif,nismod/smif