fixed sphinx config

(Also fixed use of die() in the docs_deploy script so that it fails
properly.)

Author: orbeckst

ci/deploy_docs.sh

@@ -33,7 +33,7 @@ test -n "${GH_TOKEN}" || die "GH_TOKEN is empty: need OAuth GitHub token to cont
 test -n "${GH_REPOSITORY}" || die "GH_REPOSITORY must be set in .travis.yml" 100
 test -n "${MDA_DOCDIR}" || die "MDA_DOCDIR must be set in .travis.yml" 100
 
-cd ${MDA_DOCDIR} || die "Failed to 'cd ${MDA_DOCDIR}'. Run from the top level of the repository"
+cd ${MDA_DOCDIR} || die "Failed to 'cd ${MDA_DOCDIR}'. Run from the top level of the repository" $?
 
 git init
 git config user.name "${GIT_CI_USER}"

doc/source/conf.py

@@ -61,7 +61,7 @@
 # General information about the project.
 project = u'GridDataFormats'
 authors = (u'Oliver Beckstein, Jan Domanski, Jesse Johnson, Max Linke, Tyler Luchko, '
-           u'Dominik Mierzejewski, Giacomo Fiorin', 'Lily Wang')
+           u'Dominik Mierzejewski, Giacomo Fiorin, Lily Wang')
 copyright = u'2007-2020, ' + authors
 
 # The version info for the project you're documenting, acts as replacement for